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Last Updated On 23-10-2022 - By Sara

Which of the following pteridophytes is heterosporous

1)

2)

3)

4)


Question ID - 100249 :-

Which of the following pteridophytes is heterosporous

1)

2)

3)

4)

1 Answer
5876 Votes
3537

Answer Key : (4) -

 family-Salviniaceae is heterosporous fern, producing spores of different sizes.



Next Question :

A uniform rod of  and length  is pivoted at one end such that it can rotate in a vertical plane. There is negligible friction at the pivot. The free end of the rod is held vertically above the pivot and then released. The angular acceleration of the rod when it makes an angle with the vertical is

a)

b)

c)

d)


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