Answer:
''Photosynthesis directly affect the vegetative growth of plants''
Step-by-step explanation:
''Photosynthesis directly affect the vegetative growth of plants'' is the hypothesis that shows decrease occur in the bags of leaves. Photosynthesis is directly related to vegetative growth because Photosynthesis is a process of making food by using sunlight, this food is used by the plant to bear more number of leaves so if the process of photosynthesis is done properly, no decrease occur in the bags of leaves.