Last updated on December 9th, 2023 at 09:59 pm
Class 4 Science – How do Plants make food
What is the main function of leaves in plants?
- a) To produce oxygen
- b) To provide support
- c) To make food for the plant
- d) To attract pollinators
Answer: c) To make food for the plant
Which pigment is responsible for the green color of leaves?
- a) Carotene
- b) Xanthophyll
- c) Chlorophyll
- d) Anthocyanin
Answer: c) Chlorophyll
What is the process by which leaves prepare food in plants?
- a) Respiration
- b) Transpiration
- c) Photosynthesis
- d) Absorption
Answer: c) Photosynthesis
What are plants called as they are able to make their food?
- a) Consumers
- b) Producers
- c) Decomposers
- d) Predators
Answer: b) Producers
Which of the following is required for photosynthesis to occur?
- a) Water
- b) Oxygen
- c) Nitrogen
- d) Hydrogen
Answer: a) Water
What is the main function of roots in plants?
- a) To produce food
- b) To provide support
- c) To absorb water and minerals from the soil
- d) To attract pollinators
Answer: c) To absorb water and minerals from the soil
What is the structure that attaches the leaf to the stem called?
- a) Lamina
- b) Apex
- c) Midrib
- d) Petiole
Answer: d) Petiole
What is the main function of veins in leaves?
- a) To provide support
- b) To transport water and minerals
- c) To produce food
- d) To attract pollinators
Answer: b) To transport water and minerals
Which part of the leaf is responsible for carrying water and minerals from the stem to the leaf?
- a) Midrib
- b) Lamina
- c) Apex
- d) Petiole
Answer: a) Midrib
What is the main function of the leaf blade or lamina?
- a) To absorb water and minerals
- b) To provide support
- c) To make food for the plant
- d) To attract pollinators
Answer: c) To make food for the plant
What is the arrangement of veins in a leaf called?
- a) Network
- b) Venation
- c) Reticulation
- d) Parallelism
Answer: b) Venation
What are the two types of venation?
- a) Circular and spiral venation
- b) Radial and diagonal venation
- c) Reticulate and parallel venation
- d) Divergent and convergent venation
Answer: c) Reticulate and parallel venation
In which type of venation are the veins arranged in the form of a network?
- a) Parallel venation
- b) Circular venation
- c) Spiral venation
- d) Reticulate venation
Answer: d) Reticulate venation
Which type of venation is found in plants with a fibrous root system?
- a) Reticulate venation
- b) Spiral venation
- c) Circular venation
- d) Parallel venation
Answer: d) Parallel venation
Which part of the leaf determines the type of venation in a plant?
- a) Lamina
- b) Midrib
- c) Petiole
- d) Apex
Answer: b) Midrib
What are the tiny pores present in the leaves called?
- a) Stomata
- b) Veins
- c) Midribs
- d) Lamina
Answer: a) Stomata
Where are stomata generally present on a leaf?
- a) Upper surface
- b) Both upper and lower surface
- c) Lower surface
- d) None of the above
Answer: c) Lower surface
What is the process by which plants give out excess water in the form of water vapour through stomata?
- a) Transpiration
- b) Photosynthesis
- c) Respiration
- d) Absorption
Answer: a) Transpiration
What is the green pigment present in the leaves that traps sunlight?
- a) Chloroplast
- b) Chlorophyll
- c) Mitochondria
- d) Ribosome
Answer: b) Chlorophyll
