Spines in cactus are due to ___

Which among the following is incorrect about different modes of modifications in stems?

Several ripened ovaries produced by same flower on same thalamus form aggregate fruits and each ovary forms a fruitlet.

Embryonic shoot is covered by a protective layer called _____

Which among the following statements is incorrect about stamens?

Which among the following is incorrect about stamens?

Which among the following is incorrect about Carpel?

Which among the following is incorrect about importance of root system?