In the absence of which of the following, will photosynthesis not occur in leaves?

Choose the correct statement about weeds. (A) Weeds grow in the fields without being planted. (B) It is important to remove weeds from the field. (C) Weeds reduce the production of field by using the water and fertilizers given to the crops. (D) Weeds do not affect the production of crops.

Match the following:
Plant disease Mode of Transmission

Why are Pitcher plants heterotrophs?

Which alkaloid is found in the tobacco?

Which of the following is the food of Silkworm?

In the absence of which of the following, will photosynthesis not occur in leaves?

Which of the following statements is/are correct?
I. All green plants can prepare their own food.
II. Most animals are autotrophs.
III. Carbon dioxide is not required for photosynthesis.
IV. Oxygen is liberated during photosynthesis
Choose the correct answer from the options below.

Which of the following statements is/are true for sexual reproduction in plants?
I. Plants are obtained from seeds.
II. Two plants are always essential.
III. Fertilization can occur only after pollination.
IV. Only insects are agents of pollination.
Choose from the options given below.

Which one of the following is not a consequence of deforestation?

A teacher took up plants as the theme to teach class IV students. She provided the following learning opportunities.
A. Collection of leaves in groups.
B. Discussions about shapes, sizes and other features of leaves.
C. Making a herbarium
For such activities, what should the teacher not encourage the most?