THE FOOD FACTORY OF PLANTS – 50 MCQ
Q1. Plants that make their own food are called—
(a) Parasites
(b) Heterotrophs
(c) Autotrophs
(d) Consumers
Q2. Plants prepare food by—
(a) Respiration
(b) Photosynthesis
(c) Digestion
(d) Transpiration
Q3. Green pigment in leaves is—
(a) Starch
(b) Glucose
(c) Chlorophyll
(d) Oxygen
Q4. Food factory of plants is—
(a) Root
(b) Stem
(c) Leaf
(d) Flower
Q5. Tiny pores on leaves are called—
(a) Midrib
(b) Veins
(c) Stomata
(d) Apex
Q6. Plants take in _____ from air.
(a) Oxygen
(b) Carbon dioxide
(c) Nitrogen
(d) Hydrogen
Q7. Plants release during photosynthesis—
(a) Carbon dioxide
(b) Oxygen
(c) Nitrogen
(d) Smoke
Q8. Stored food in plants is—
(a) Protein
(b) Starch
(c) Fat
(d) Water
Q9. The tip of leaf is called—
(a) Apex
(b) Blade
(c) Root
(d) Stem
Q10. The main vein of a leaf is—
(a) Apex
(b) Midrib
(c) Stomata
(d) Flower
Q11. Water is absorbed by—
(a) Leaf
(b) Stem
(c) Root
(d) Flower
Q12. Photosynthesis needs—
(a) Sunlight
(b) Water
(c) Carbon dioxide
(d) All of these
Q13. Glucose is a type of—
(a) Salt
(b) Sugar
(c) Protein
(d) Fat
Q14. Iodine test is used to detect—
(a) Water
(b) Starch
(c) Oxygen
(d) Soil
Q15. Example of autotroph is—
(a) Cow
(b) Human
(c) Mango plant
(d) Lion
Q16. Example of heterotroph is—
(a) Neem
(b) Rose
(c) Goat
(d) Grass
Q17. Chlorophyll traps—
(a) Water
(b) Sunlight
(c) Soil
(d) Food
Q18. Photosynthesis occurs in—
(a) Roots
(b) Leaves
(c) Flower
(d) Fruit
Q19. Carbon dioxide enters through—
(a) Roots
(b) Stem
(c) Stomata
(d) Flower
Q20. Oxygen is released through—
(a) Roots
(b) Stomata
(c) Stem
(d) Soil
Q21. Potato stores food in form of—
(a) Sugar
(b) Starch
(c) Protein
(d) Fat
Q22. Plants are called producers because—
(a) They move
(b) They make food
(c) They grow
(d) They breathe
Q23. Sun is the main source of—
(a) Soil
(b) Light energy
(c) Water
(d) Air
Q24. Leaf is called kitchen of plant because—
(a) It grows
(b) It stores water
(c) It makes food
(d) It absorbs soil
Q25. Photosynthesis means—
(a) Food making process
(b) Breathing process
(c) Digestion
(d) Reproduction
Q26. Function of stomata is—
(a) Gas exchange
(b) Transport water
(c) Support plant
(d) Make seeds
Q27. Water vapour leaves through—
(a) Roots
(b) Stomata
(c) Fruit
(d) Flower
Q28. Plants store food in—
(a) Root
(b) Stem
(c) Fruit
(d) All of these
Q29. Rice contains much—
(a) Protein
(b) Fat
(c) Starch
(d) Water
Q30. Green color of leaves is due to—
(a) Glucose
(b) Chlorophyll
(c) Oxygen
(d) Starch
Q31. Food gives us—
(a) Energy
(b) Growth
(c) Strength
(d) All of these
Q32. Plants prepare food mostly during—
(a) Night
(b) Day
(c) Winter
(d) Rainy season
Q33. Which is not needed for photosynthesis?
(a) Sunlight
(b) Water
(c) Plastic
(d) Carbon dioxide
Q34. Animals depend on plants for—
(a) Food
(b) Oxygen
(c) Both
(d) None
Q35. Extra food in plants is stored as—
(a) Oil
(b) Salt
(c) Starch
(d) Gas
Q36. Leaf blade is—
(a) Flat part
(b) Root part
(c) Flower part
(d) Seed part
Q37. Side veins are attached to—
(a) Apex
(b) Midrib
(c) Root
(d) Stem
Q38. Plants absorb water from—
(a) Air
(b) Roots
(c) Flower
(d) Fruit
Q39. Oxygen produced is useful for—
(a) Animals
(b) Humans
(c) Living beings
(d) All of these
Q40. Plants are self feeders because—
(a) They make own food
(b) They move
(c) They sleep
(d) They fly
Q41. Neem is an example of—
(a) Heterotroph
(b) Autotroph
(c) Animal
(d) Parasite
Q42. Glucose is converted into—
(a) Water
(b) Starch
(c) Oxygen
(d) Soil
Q43. Tiny holes under leaf are—
(a) Veins
(b) Stomata
(c) Midrib
(d) Apex
Q44. Plants take water from—
(a) Soil
(b) Air
(c) Sun
(d) Leaves
Q45. Food prepared first in leaves is—
(a) Salt
(b) Fat
(c) Glucose
(d) Oil
Q46. Chlorophyll is found in—
(a) Roots
(b) Green leaves
(c) Stem only
(d) Flower only
Q47. Photosynthesis needs carbon dioxide from—
(a) Water
(b) Soil
(c) Air
(d) Food
Q48. Blue-black color in iodine test shows presence of—
(a) Water
(b) Starch
(c) Air
(d) Oxygen
Q49. Which is a swaposhi (Autotroph)?
(a) Dog
(b) Cow
(c) Grass
(d) Lion
Q50. “Food Factory of Plants” means—
(a) Root
(b) Stem
(c) Leaf
(d) Flower
THE FOOD FACTORY OF PLANTS
25 Subjective Questions Answers
1. What is food?
Answer:
Food is a substance that gives energy and helps living things grow and do daily activities.
2. Why do living things need food?
Answer:
Living things need food for energy, growth, repair of body parts and survival.
3. What are autotrophs?
Answer:
Living things that can make their own food are called autotrophs.
Example: Green plants
4. What are heterotrophs?
Answer:
Living things that depend on others for food are called heterotrophs.
Example: Humans and animals
5. Why are leaves called the food factory of plants?
Answer:
Leaves are called the food factory because they prepare food for the plant.
6. What is a leaf blade?
Answer:
The flat green part of a leaf is called the leaf blade.
7. What is leaf apex?
Answer:
The pointed tip of a leaf is called leaf apex.
8. What is midrib?
Answer:
The thick central vein of a leaf is called midrib.
9. What are side veins?
Answer:
The small veins attached to the midrib are called side veins.
10. What are stomata?
Answer:
Tiny pores present on leaves are called stomata.
11. What is chlorophyll?
Answer:
Chlorophyll is the green pigment present in leaves.
12. What is photosynthesis?
Answer:
Photosynthesis is the process by which plants make food using sunlight, water and carbon dioxide.
13. What are the raw materials needed for photosynthesis?
Answer:
Water, carbon dioxide, sunlight and chlorophyll.
14. From where do plants get water?
Answer:
Plants get water from the soil through roots.
15. From where do plants get carbon dioxide?
Answer:
Plants get carbon dioxide from air through stomata.
16. Why is sunlight important for plants?
Answer:
Sunlight provides energy for making food.
17. What gas is released during photosynthesis?
Answer:
Oxygen gas is released during photosynthesis.
18. What is glucose?
Answer:
Glucose is a type of sugar made by plants.
19. What is starch?
Answer:
Starch is the stored form of food in plants.
20. How can we test starch in a leaf?
Answer:
By using iodine solution. The leaf turns blue-black if starch is present.
21. Why are green plants called producers?
Answer:
Green plants are called producers because they make their own food.
22. What happens if plants do not get sunlight?
Answer:
Plants cannot prepare food without sunlight.
23. Why are roots important for plants?
Answer:
Roots absorb water and minerals from the soil.
24. What is the role of stomata in leaves?
Answer:
Stomata help in gas exchange and release water vapour.
25. Why are plants important for animals and humans?
Answer:
Plants provide food and oxygen to animals and humans.
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