Consider the following statement(1) In chara upper oogonium and lower ...
Statement Analysis:
(1) In chara upper oogonium and lower antheridium is present - This statement is correct as in Chara, a genus of green algae, the oogonia (female reproductive structures) are located at the top of the plant, while the antheridia (male reproductive structures) are located at the bottom.
(2) Both Marchantia and sweet potato are dioecious - This statement is incorrect as Marchantia, a liverwort plant, is monoecious (having both male and female reproductive structures on the same plant) while sweet potato is monoecious or occasionally dioecious.
Answer:
The correct answer is option A, i.e., only statement (1) is correct.
Explanation:
- Chara is a genus of green algae, and it has a unique reproductive structure where the upper part of the plant contains the oogonium, and the lower part of the plant contains antheridium.
- This reproductive structure of Chara is an example of oogamy, a type of sexual reproduction in which the female gamete (egg) is non-motile and the male gamete (sperm) is motile.
- On the other hand, Marchantia is a liverwort plant, and it has a unique reproductive structure where a single plant can have both male and female reproductive structures, making it monoecious.
- Sweet potato is a root vegetable, and its reproductive structure can be monoecious or occasionally dioecious, meaning some plants have only male or female reproductive structures while others have both structures.
- Therefore, the correct answer is option A, only statement (1) is correct, and statement (2) is incorrect.
Consider the following statement(1) In chara upper oogonium and lower ...
It is theoretical and this this questions is given in the plus two class NCERT in 1st chapter the diagram shown this questions answer
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