Objective

Question-1. Why are the leaves of plants green?

Ans- due to chlorophyll

Question-2. The simplest organisms are often?

Ans- unicellular

Question-3. Multicellular organisms have compositions.

Ans- complex

Question-4. All those processes which together do the work of maintenance are called?

Ans- biological process

Question-5. What is the taking of food of living beings and the formation of the body and conducting bodily activities called

Ans- Nutrition

Question-6. It is stored in plants as carbohydrates.

Ans- starch

Question-7. By what processes do living beings maintain their bodies?

Ans- by nutrition, respiration, transport and excretion

Question-8. All the processes that occur in the bodies of living beings, due to which their existence is maintained, what is it called?

Ans- biological processes

Question-9. What is the body like of multicellular organisms like humans?

Ans- vast and complex

Question-10. Into how many categories is the food divided according to the task?

Ans- 3

Question-11. The mode of nutrition in which the organism makes its own food, that is, synthesizes it, is called

Ans- autotrophic

Question-12. The mode of nutrition, in which the organism obtains its food from some other source rather than synthesizing it itself, is called

Ans- parenting

Question-13. The mode of nutrition in which organisms get their food from different sources is called

Ans- heterotrophic nutrition

Question-14. Autotrophic nutrition is accomplished through which process?

Ans- by photosynthesis

Question-15. On what is the life of the host directly or indirectly based?

Ans- on autotrophs

Question-16. The method of nutrition in which an organism obtains its food from the bodies of dead animals and plants is called

Ans- survival nutrition

Question-17. The method of nutrition in which living beings obtain their food either permanently or temporarily in contact with other organisms, is called what?

Ans- parasitic nutrition

Question-18. The nutrition in which organisms take their food in the form of solid or liquid by the method of taking food of animals, what is it called?

Ans- prism nutrition

Question-19. What are the living beings in which the animal feed is called?

Ans- zoologist

Question-20. The process in which green plants prepare their food in the presence of water, carbon-di-oxide and sunlight is called what?

Ans- Photosynthesis

Question-21. Water is transported throughout the plant through

Ans- by xylem tissues

Question-22. What is the exchange of CO₂ and O₂ in plants?

Ans- stomata found on leaves

Question-23. Which is called the kitchen of plants?

Ans- to leaves

Question-24. The leaves have green oval formations, which are called.

Ans- chloroplast

Question-25. What is present in green lacquer?

Ans- chlorophyll

Question-26. What is found in chlorophyll?

Ans- magnesium

Question-27. How many components does chlorophyll have?

Ans- 4 (chlorophyll-a, chlorophyll-b, xanthophyll and carotene)

Question-28. What is the color of chlorophyll-a, chlorophyll-b, xanthophyll and carotene?

Ans-

chlorophyll-a → blue-green

chlorophyll-b → yellow-green

xanthophyll → yellow

carotene → orange

Question-29. Amoeba makes temporary finger-like shoots on its surface, which are called.

Ans- pseudopod

Question-30. What does the cotyledon make by enclosing the food?

Ans- food grain

Question-31. What type of animal are Paramecium and Amoeba?

Ans- unicellular

Question-32. What is the circulation organelle found on the body of Paramecium?

Ans- Celia

Question-33. The first step of the process of photosynthesis in which photo-decomposition of water takes place is called which reaction?

Ans- photoreaction

Question-34. The second step of the mechanism of photosynthesis in which CO2 is reduced or fixed is called which reaction?

Ans- Non-photonic reaction (since light is not necessary in this.)

Question-35. What is a dead person called?

Ans- decomposer

Question-36. Organisms that eat the decaying matter of the dead bodies of other organisms are called what?

Ans- detergent

Question-37. What are the leaves and chloroplasts called?

Ans-

leaves → photosynthetic organ

to chloroplast → photosynthetic organelle

Question-38. What is the mode of nutrition in fungi?

Ans- heterotroph

Question-39. Essential for autotrophic nutrition.

(a) Co₂ and water (b) Chlorophyll (c) Sunlight (d) All of them

Ans- (d) all of them

Question-40. What is the percentage of CO₂ and O₂ in the atmosphere?

Ans-

CO₂ (carbon-di-oxide) → 0.03%

O₂ (oxygen) → 0.003%

Question-41. A biological process found in living things.

(a) respiration (b) nutrition (c) reproduction (d) all of these

Ans- (d) all of them

Question-42. Oxygen is released in the process of photosynthesis.

Ans- by water

Question-43. What is the mode of nutrition found in unicellular organisms like Paramecium and Amoeba?

Ans- Pranisam

Question-44. Which of the following is a decomposer?

(a) Algae (b) Roundworm (c) Bacteria (d) Amarbel

Ans- (c) bacteria

Question-45. Amoeba takes its food.

Ans- by code

Question-46. Through which food is ingested in humans?

Ans- through the mouth (into the oral cavity)

Question-47. Where does complete digestion of food take place?

Ans- in the esophagus

Question-48. What is the combined form of the entire esophagus and digestive glands called?

Ans- Digestive System

Question-49. The mouth, stomach, gastrointestinal tract, small intestine (small intestine) and large intestine (colon or colon) are parts of?

Ans- of human digestive system

Question-50. Which are the major glands that aid in digestion?

Ans- pancreas and pancreas

Question-51. Which enzyme is found in saliva?

Ans- Tylen (saliva amylase)

Question-52. What does Tylen (saliva amylase) do?

Ans- Breaks down the carbohydrates in food and converts them into maltose.

Question-53. Which glands are found in the inner wall of the stomach?

Ans- gastric glands

Question-54. What do gastric glands secrete?

Ans- gastric juice

Question-55. Which protein digestive enzymes are present in gastric juice?

Ans- Pepsin and Renin

Question-56. Digestion of food takes place in the stomach.

Ans- in acidic medium

Question-57. Where does food reach after the stomach?

Ans- in the duodenum

Question-58. Digestion takes place in Pakvasya.

Ans- in alkaline medium

Question-59. What is the simplification of fat particles called?

Ans- emulsification

Question-60. What enzymes are found in pancreatic juice?

Ans- Amylase, Trypsin and Lipase

Question-61. What converts emulsified fats into fatty acids and glycerol?

Ans- lipase

Ans-62. There are numerous finger-like bulges on the inner wall of the small intestine, which are called.

उत्तर- long-haired

Question-63. Which glands are present in between the oocyte, which secrete the digestive juices?

Ans- enteric glands

Question-64. Where does the digestion of food take place?

Ans- in the small intestine

Question-65. Where does the absorption of fatty acids and glycerol take place?

Ans- in the lymph duct

Question-66. Where does the absorption of water and the exclusion of undigested food take place?

Ans- in the large intestine

Question-67. A shiny and hard layer is found on the teeth, which is called?

Ans- enamel

Question-68. Due to whose effect the teeth become weak and break or infection gets inside them?

Ans- by acid effect

Question-69. Which gets converted into protein after digestion?

Ans- amino acids

Question-70. What is the yellow juice secreted from?

Ans- from the liver

Question-71. What is the role of enzymes in our body?

Ans- as a biocatalyst

Question-72. Found in gastric juice of stomach.

Ans- hydrochloric acid

Question-73. Which element is used in the synthesis of proteins?

Ans- of nitrogen

Question-74. Hydrochloric acid facilitates the action of which enzyme?

Ans- pepsin

Question-75. Approximately what is the total amount of blood in the body of an adult human?

Ans- 5-6 liters

Question-76. Blood is a type of connective tissue found in?

(a) RBC (b) WBC (c) Platelets (d) All of these

Ans- (a) RBC

Question-77. With which instrument is blood pressure measured?

Ans- by sphygmomanometer

Question-78. Which is a protein digesting enzyme in acidic medium?

Ans- pepsin

Question-79. What are green plants called?

Ans- producer

Question-80. The process of photosynthesis takes place.

Ans- in daytime

Question-81. What is the living unit of living things?

Ans- the cell

Question-82. Which component is deficient in the blood of dengue patient?

Ans- platelets

Question-83. What is the movement of amoeba?

Ans- pseudopod

Question-84. Which of the following is a malaria parasite?

(a) Earthworm (b) Protozoa (c) Leishmania (d) None of these

Ans- (a) Earthworm

Question-85. Which mode of nutrition is found in fungi?

Ans- dead survivor

Question-86. Plants get rid of excess water.

Ans- by transpiration

Question-87. In which part of the chloroplast does the process of photosynthesis take place?

Ans- in the granum part

Question-88. What causes blood to clot?

Ans- platelets

Question-89. What is the role of acid in our stomach?

Ans- Helps in digestion of food.

Question-1. Gaining energy from the breakdown of food by oxygen taken from outside the body is called?

Ans- respiration

Question-2. What is respiration?

Ans- reducing

Question-3. Represent the complete respiration process by chemical equation.

Ans- C₆H₁₂O₆ → 6CO₂ + 6H₂O + Energy (2830 kJ)

Question-4. Into how many parts is respiration divided?

Ans- Two (oxy respiration and anoxic respiration)

Question-5. In whose presence does oxygen respiration take place?

Ans- in the presence of oxygen

Question-6. In how many steps is oxygen respiration completed?

Ans- 2

first stage - in the cytoplasm

Phase II - in the mitochondria

Question-7. How many molecules are produced in oxygen respiration?

Ans- 38 ATP

Question-8. Anoxic (anaerobic respiration) takes place.

Ans- in the absence of oxygen

Question-9. In how many steps does anoxic (anaerobic respiration) take place?

Ans- 1 (in the cytoplasm)

Question-10. How many molecules are produced in anoxic (anaerobic respiration)?

Ans- 8 ATP

Question-11. Anoxy (anaerobic respiration) occurs under the influence of which enzyme?

Ans- zymez

Question-12. What is the name of the process of anoxic (anaerobic respiration) that occurs under the influence of the enzyme zymase and in which ethene alcohol and energy are produced as a result of the simplification of glucose?

Ans- fermentation

Question-13. What is the blood of cockroaches called?

Ans- hemolymph

Question-14. Which helps in the expansion of lungs during respiration?

Ans- diaphragm

Question-15. Both the nostrils go back and open into a wide area called.

Ans- nostril

Question-16. What is the curved path ahead of the nostril called?

Ans- nasopharynx (pharynx)

Question-17. The pharynx opens into the windpipe through an orifice called?

Ans- larynx

Question-18. What is located in the anterior part of the larynx?

Ans- larynx or trachea

Question-19. What is the front part of the throat (trachea) called?

Ans- trachea

Question-20. The walls of the trachea are made of cartilage. How are these cartilages arranged?

Ans- as a ring

Question-21. How is the diaphragm constructed?

Ans- flexible and strong

Question-22. What is the entry of atmospheric air into the lungs called?

Ans- inhalation

Question-23. What is the air coming out of the lungs called?

Ans- external respiration

Question-24. What are mitochondria called of a cell?

Ans- power house

Question-25. Name the major respiratory organs found in animals.

Ans- gills, lungs, trachea

Question-26. Name the respiratory organ of fish.

Ans- Gilles

Question-27. Name the respiratory organs present in birds and mammals.

Ans- lung

Question-28. What type of respiration is fermentation?

Ans- anaerobic

Question-29. What is the intermediate substance of respiration?

Ans- pyruvate

Question-30. What is released as a product in respiration?

Ans- CO₂ and water

Question-31. What is the main respiration of insects?

Ans- trachea

Question-32. What is the public carrier of chemical energy in living cells called?

Ans- ATP (adenosine tri phosphate)

Question-33. Where does glycolysis take place?

Ans- in cytoplasm

Question-34. The complete oxidation of pyruvate produced during glycolysis takes place in which organelle of the cell?

Ans- in mitochondria

Question-35. Where is the diaphragm located?

Ans- posterior part of the thoracic cavity

Question-36. What is called cellular fuel?

Ans- to glucose

Question-37. Ethyl alcohol is produced by which type of respiration?

Ans- anoxic (anaerobic) respiration

Question-38. What happens to food in the process of respiration?

Ans- dissolution

Question-39. What is the process of inhaling and exhaling in humans called?

Ans- respite

Question-40. How much energy is released by the breakdown of ATP during respiration in plants?

Ans- 30.5 kj/mol

Question-41. How many phosphates are there in ATP?

Ans- 3 (three)

Question-42. In the absence of which component photosynthesis is not possible in plants?

Ans- chlorophyll

Question-43. What is the intermediate substance of respiration?

Ans- Oxy Respiration (Aeronautical Respiration)

Question-44. Name the respiratory organs of mosquito, earthworm and human being.

Ans-

Mosquitoes → Air ducts (trachea)

earthworm → skin

Human → Lung

Question-45. Which of the following is a bisexual organism?

(a) Earthworm (b) Fish (c) Lion (d) Goat

Ans- (a) Earthworm

Question-46. How many chambers are there in the heart of a fish?

Ans- 2

Question-47. What is the end product of respiration?

Ans- CO₂, H₂O and energy

Question-1. What is the process of extraction of water from the aerial parts of the plant called?

Ans- transpiration

Question-2. Xylem is responsible in plant.

Ans- to carry water

Question-3. What is the water-conducting tissue in plants?

Ans- xylem

Question-4. In which part of the plant does transpiration take place?

(a) flower (b) stem (c) leaf (d) all

Ans- (d) all

Question-5. What is blood?

Ans- cell (liquid connective tissue)

Question-6. What is the pale yellow colored liquid in the blood called?

Ans- plasma

Question-7. The red color of blood is due to the presence of which protein?

Ans- because of hemoglobin

Question-8. How many chambers are there in human heart?

Ans- 4

Question-8. What is the average systolic pressure of the human heart?

Ans- 120 mmHg approx

Question-9. Where is the open circulatory system found?

Ans- in the cockroach

Question-10. What are the blood vessels that carry pure blood from the heart to different parts of the body called?

Ans- arteries

Question-11. Which granules present in the blood take part in the transport of respiratory gases?

Ans- red blood cells

Question-12. What is the WBC blood plasma located between tissue cells called?

(a) tissue fluid (b) lymph (c) lymph (d) all of these

Ans- (d) all of these

Question-13. What is the main function of blood platelets in the body?

Ans- aid in clotting of blood

Question-14. What is the non-fibrinogen plasma called?

Ans- Serum

Question-15. How are materials transported in unicellular algae and in euglena?

Ans- by diffusion

Question-16. How are water and dissolved minerals transferred to plants?

Ans- by xylem tubules

Question-17. In what form is the transport of food by the phloem in plants?

Ans- as sucrose

Question-18. Which cell present in human blood carries oxygen?

Ans- red blood cells (RBC)

Question-19. What is the full form of ECG?

Ans- Electrocardiograph

Question-20. What is vascular tissue called?

Ans- to xylem and phloem

Question-21. Where are sieve tubes found?

Ans- in phloem vascular tissue

Question-22. Why is blood red in colour?

Ans- because of hemoglobin

Question-23. Name the blood vessel that carries pure blood from the lungs to the left atrium.

Ans- pleural vein

Question-24. Where in the body are red blood cells made?

Ans- in bone marrow

Question-25. Which component of blood helps in blood clotting?

Ans- platelets or thrombocytes

Question-26. What is the condition of higher than normal blood pressure in humans called?

Ans- Hypertension

Question-27. Name the largest artery of the body.

Ans- aorta

Question-28. Arteries and veins are connected to each other by

Ans- by blood cells

Question-29. What is the pressure of blood flow in the aorta and its main branches called?

Ans- blood pressure

Question-30. What are the components of the vascular system in humans?

Ans- blood, heart and blood vessels

Question-31. What is the contraction of the brackets of the heart called?

Ans- systole

Question-32. How does the transfer of food materials take place in plants?

Ans- from high concentration part to low concentration part

Question-33. In the absence of oxygen in animal muscle cells, pyruvate is converted into which compound?

Ans- lactic acid

Question-34. The fat absorbed by the small intestine is carried by?

Ans- by lymph

Question-35. Which chamber of the human heart has the thickest muscular wall?

Ans- of the ventricles

Question-36. Which blood vessel wall is pearly and flexible?

Ans- of arteries

Question-37. What is the normal blood pressure of a healthy person?

Ans- 120/80

Question-38. Oxygenated blood from the lungs comes to the heart.

Ans- from left atrium

Question-39. Name the carrier of oxygen in the blood.

Ans- red blood cells (RBC)

Question-40. Growth of pollen tube towards ovule is related to which type of follow?

Ans- chemistry

Question-1. The largest part of the digestive system is?

Ans- liver

Question-2. In humans, the kidney is part of a system, which is related to.

Ans- by emissions

Question-3. What is the structural and functional unit of kidney called?

Ans- nephron

Question-4. What is the dialysis pouch in humans called?

Ans- to the nephron

Question-5. What is the removal of waste products from the body of living organisms as a result of metabolic activities called?

Ans- emissions

Question-6. Which of the following is an excretory organ?

(a) kidney (b) pancreas (c) eye (d) none

Ans- (a) kidney

Question-7. Where does urea enter the blood?

Ans- from the liver

Question-8. What is the approximate number of renal tubules in each human kidney?

Ans- 1 million

Question-9. Which waste product does the artificial kidney separate from the blood by dialysis?

Ans- to nitrogen

Question-10. Plant waste accumulates.

(a) leaves (b) bark (c) cellular vacuoles (d) all of them

Ans- (d) all of them

Question-11. Plant excretory substances.

(a) gum (b) tannin (c) resin (d) all of these

Ans- (d) all of these

Question-12. The process of purification of blood by dialysis machine is called?

Ans- hemodialysis

Question-13. What is an artificial kidney called?

Ans- to hemodialysis machine

Question-14. What is the cup-like structure found at the beginning of the nephron called?

Ans- bowman capsule

Question-15. Why is urine yellow in colour?

Ans- due to urochrome pigment

Question-16. Where is urea manufactured?

Ans- in the mitochondria of liver cells

Question-17. Mention two important functions of kidney.

Ans- emissions and water balance

Question-18. Name the excretory substances of acacia and pine.

Ans- glue and resins

Question-19. Where are substances called tannins stored in plants?

Ans- in the bark of trees

Question-20. Which of the following is less toxic to animals, urea and ammonia?

Ans- urea

Question-21. Where is the arc of Henle found?

Ans- in the nephron

Question-22. Name the excretory substances produced by the breakdown of amino acids.

Ans- ammonia and urea

Question-23. What is the major product of protein metabolism?

Ans- urea