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Choose the incorrect statements I In ...

Choose the incorrect statements
I In a normal bisexual flower, complete autogamy is rather rare
II. All plants having cleistogamous flowers are invariably autogamous
lll Wind pollination is common in grasses
IV. Hydrophily is common in flowering plants. The correct answer is

A

I , lll

B

ll, lV

C

l,ll

D

lll,lV

Text Solution

AI Generated Solution

The correct Answer is:
To determine the incorrect statements from the given options, we will analyze each statement one by one. ### Step-by-Step Solution: 1. **Statement I: In a normal bisexual flower, complete autogamy is rather rare.** - **Analysis:** This statement is correct. In bisexual flowers, while both male (stamen) and female (pistil) reproductive organs are present, complete self-pollination (autogamy) is rare due to various mechanisms that promote cross-pollination (outbreeding devices). 2. **Statement II: All plants having cleistogamous flowers are invariably autogamous.** - **Analysis:** This statement is incorrect. Cleistogamous flowers do not open and can self-pollinate, but some plants also produce chasmogamous flowers (which do open) that can cross-pollinate. Therefore, not all plants with cleistogamous flowers are invariably autogamous. 3. **Statement III: Wind pollination is common in grasses.** - **Analysis:** This statement is correct. Grasses are known for their wind pollination, which is a common method among many flowering plants, especially monocots. 4. **Statement IV: Hydrophily is common in flowering plants.** - **Analysis:** This statement is incorrect. Hydrophily, or water pollination, is quite rare in flowering plants. Most plants rely on insects or wind for pollination, making this statement false. ### Conclusion: Based on the analysis, the incorrect statements are: - **Statement II**: All plants having cleistogamous flowers are invariably autogamous. - **Statement IV**: Hydrophily is common in flowering plants. ### Final Answer: The correct answer is **Statements II and IV are incorrect.** ---
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