Question

Cycas and Adiantum resemble each other in having:
A. Seeds
B. Motile Sperm
C. Cambium
D. Vessels

Answer 1

Hint: Cycas is a gymnosperm while adiantum is a pteridophyte or fern. Adiantum is also known as the Maidenhair fern. Both of these lack true vessels. Both seeds and cambium are present in Gymnosperms but are absent in Pteridophytes and therefore, adiantum lacks seeds and cambium.

Complete answer:
To solve the given question, we must be aware of Cycas and Adiantum.
Cycas is a gymnosperm which belongs to Family Cycadaceae. It male gametes are the largest of all the plants in nature. They are visible to naked eyes and are broad and oval in shape. They are spirally coiled anteriorly and contain thousands of small cilia. Due to the presence of these cilia, the sperms are motile.
Adiantum is a fern which belongs to Family Pteridaceae. They are capable of shedding water without themselves getting wet. They have black stripes and rachises. Many clusters of sporangia also known as the sori are present on the ferns sub-marginally. They usually grow in moist soil and are often found growing on moist rock walls and in water seepage areas.They also produce motile sperms just like Cycas.

Since, we are well aware of both Cycas and Adiantum, therefore the correct answer to the question is that Cycas and Adiantum resemble each other in having motile sperms.

Note: Here it must be noted that in Cycas the microspore form the Prothallial cells and the Antheridial cells. The Antheridial cells from the tube cells and the generative cells. These generative cells are further from the stalk cell and the body cells. These body cells finally form the motile sperms.