In a majority of aquatic plants, flowers
(A) Remain submerged in water
(B) Emerge above the level of water
(C) Are pollinated by water
(D) Are pollinated by insects or wind
(a) A & C
(b) B & D
(c) B & C
(d) A & D

Options

A. A & C
B. B & D
C. B & C
D. A & D

Answer

To solve the question regarding the characteristics of flowers in aquatic plants, we need to analyze each option provided:

1. **Understanding the characteristics of aquatic plants:**
- Aquatic plants can have flowers that either remain submerged in water or emerge above the water's surface.
- The method of pollination can vary among different aquatic plants.

2. **Evaluating each option:**
- **(A) Remain submerged in water:** This is true for many aquatic plants, as their flowers often remain underwater.
- **(B) Emerge above the level of water:** This is also true for some aquatic plants, which have flowers that rise above the water.
- **(C) Are pollinated by water:** Many aquatic plants are pollinated through water, a process known as hydrophily.
- **(D) Are pollinated by insects or wind:** Some emergent flowers are indeed pollinated by insects or wind.

3. **Analyzing the combinations:**
- **(a) A & C:** This combination suggests that flowers remain submerged and are pollinated by water. This is true for many aquatic plants.
- **(b) B & D:** This combination suggests that flowers emerge above water and are pollinated by insects or wind. This is also true for some aquatic plants.
- **(c) B & C:** This combination suggests that flowers emerge above water and are pollinated by water, which is not typically the case.
- **(d) A & D:** This combination suggests that flowers remain submerged and are pollinated by insects or wind, which is not generally true.

4. **Conclusion:**
- The correct answer is **(a) A & C**, as it accurately reflects the characteristics of the majority of aquatic plants where flowers remain submerged and are pollinated by water.