Plant Kingdom Question 605
Question: Assertion : Cycas embryo has many cotyledons. Reason : Compound suspensor is formed due to fusion of suspensors of proembryos.
Options:
A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion
B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion
C) If the assertion is true but the reason is false
D) If both the assertion and reason are false
Show Answer
Answer:
Correct Answer: A
Solution:
In Cycas, more than one archegonium may be fertilized in the ovule.
The oospores of these develop into the pro-embryo stage.
Each proembryo may produce a suspensor.
All the suspensors twist together to form a compound suspensor.
It supports only one embryo which reaches maturity.
The mature embryo has two cotyledons, the plumule, and the radicle embedded in a coleorhiza.
BETA
