Question

Which one is not an exception in angiosperms?

A. Double fertilization
B. Secondary growth
C. Presence of vessels
D. Autotrophic nutrition​

Answer 1

(A).Double fertilization

Step-by-step explanation:

Double fertilization is a characteristic feature of angiosperms. It is the process by which two sperm cells fertilize two different cells in the ovule.

The first sperm cell fertilizes the egg cell to form the zygote, which will develop into the embryo.

The second sperm cell fertilizes the two polar nuclei to form the endosperm, which will nourish the developing embryo.

• Secondary growth is the process by which the vascular tissues of a plant grow outward. It is not an exception in angiosperms, as it is found in many species of angiosperms.
• The presence of vessels is a characteristic feature of angiosperms. Vessels are the main water-conducting tissues in angiosperms. They are not found in gymnosperms.
• Autotrophic nutrition is the ability to synthesize food from sunlight, water, and carbon dioxide. This is a characteristic feature of all plants, including angiosperms.

Therefore, the only option that is not an exception in angiosperms is double fertilization
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So the answer is (A).Double fertilization