Question

Thallophyta, Bryophyta, and Pteridophyta are called ‘Cryptogams’. Gymnosperms and Angiosperms are called ‘Phanerogams’. Discuss why? Draw one example of Gymnosperm.

Answer 1

Cryptogams:

1. The reproductive organs of Thallophyta, Bryophyta, and Pteridophyta are nicknamed 'Cryptogams' because they are inconspicuous or hidden.
2. Flowers and seeds aren't present.

Phanerogams:

1. 'Phanerogams,' on the other hand, are gymnosperms and angiosperms with well-differentiated reproductive parts and a stored food embryo.
2. Phanerogams include both flowers and seeds.
3. During germination, the stored food is used for initial growth.
4. These are split into two classes (i) gymnosperms(naked seed) and (ii) angiosperms(covered seed) based on the presence.

Example of Gymnosperm:

1. Gymnosperms are a plant group that has the following characteristics:

1. Their seeds are not protected by an exterior covering or shell.
2. Flowers aren't made by them. They don't produce any fruit.
3. Gymnospermae refers to a group of woody vascular seed plants (such as conifers and cycads) that have naked seeds that are not encased in an ovary and, in some circumstances, motile spermatozoids.
4. Gymnosperms include plants like Pinus and Cycas.