Question

Plants with hidden reproductive organ are called as
A) Gymnosperms
B) Cryptogame
C) Phanerogams
D) All of the above

Answer 1

Hint: The process of fusion of male and female gametes is known as fertilization. Plants exhibit sexual reproduction in which the male gametes are pollen derived from anthers and female gametes is an egg cell present in the ovary part of the pistil.

Complete answer:
Some plants also have hidden reproductive organs. These plants are known as Cryptogamae. They represent non-seed-bearing plants. Cryptogame is the plant produced by spores. Spores are primary agents of asexual reproduction. They are reproductive cells that are capable of developing into new individuals through asexual reproduction, i.e., without fertilizing with another reproductive cell.
Gymnosperms are plants in which ovules are not enclosed by any ovary wall and remain exposed before and after fertilization. The seeds developed after fertilization are naked in gymnosperms. The plants have taproots that are in fungal association in the form of pinus, and colloidal roots are associated with nitrogen-fixing bacteria, a cyanobacterium.
Phanerogams are the type of plants that produce seeds rather than spores. The seeds formed contain an embryo and are a vessel for food storage.

Hence, the correct answer is option B)Cryptogame.

Note:
Plants also reproduce asexually. There are various methods by which plants reproduce such as budding, fragmentation, vegetative propagation, sporulation, etc. Budding is a process in which a new individual comes out of the parent through a bud. The parent plant gets fragmented and each fragment grows into a new individual in fragmentation. Some plants produce spores that are dispersed through dispersal methods and are matured into new plants.