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Select one among the following A) Phy...

Select one among the following
A) Phyllode of Opuntia bear spines
B) In Asparagus leaves develop in the axil of cladophyll
C) In Chrysanthemum lateral branches develop from underground portion of stem.
D) In onion bulb is covered by tunic

A

A, B

B

B, C

C

B, D

D

C, D

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, we need to analyze each statement provided and determine which ones are correct based on our knowledge of plant morphology. ### Step-by-Step Solution: 1. **Analyzing Statement A**: "Phyllode of Opuntia bear spines." - Opuntia is a genus of cacti, and in cacti, the stem is modified to perform photosynthesis, while leaves are reduced to spines for protection. However, the term "phyllode" refers to a flattened leaf-like structure that is actually a leaf modification, not a stem modification. In Opuntia, the correct term for the stem modification is "phyloclade." Therefore, this statement is incorrect. 2. **Analyzing Statement B**: "In Asparagus leaves develop in the axil of cladophyll." - Cladophyll is a stem modification where the stem takes on the role of photosynthesis. In Asparagus, the leaves do not develop from the axils of cladophylls; instead, the cladophylls themselves are modified stems. Thus, this statement is also incorrect. 3. **Analyzing Statement C**: "In Chrysanthemum lateral branches develop from underground portion of stem." - This statement is correct. In Chrysanthemum, lateral branches can develop from the underground portion of the stem, which is a form of vegetative propagation. This process is known as "suckering," where new shoots arise from the nodes of the underground stem. 4. **Analyzing Statement D**: "In onion bulb is covered by tunic." - This statement is also correct. The onion bulb consists of fleshy leaves that store food, and these leaves are covered by a protective layer called the tunic. This is a characteristic feature of onion bulbs. ### Conclusion: Based on the analysis: - **Correct Statements**: C and D - **Incorrect Statements**: A and B ### Final Answer: The correct options are C and D. ---
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