Question

(1) describe the different methods of asexual reproduction in unicellular organisms class 7th science​

Answer 1

Answer:

METHODS OF ASEXUAL REPRODUCTION IN UNICELLULAR ORGANISMS

There are several ways by which unicellular animals divide asexually to produce daughter cells. Some common methods include: Budding, fragmentation, fission, binary fission, spores etc.  

Budding is a type of asexual reproduction in which a new organism is formed from a bud of an existing organism. The new organism remains attached to the parent organism till it gets matured. Organisms like hydra, yeasts etc reproduce by budding.

FRAGMENTATION is a form of asexual reproduction in which an entirely new organism is formed from a fragment of the parent. It occurs in multicellular organisms, whose body organization is fairly simple such as annelids, starfish, fungi, lichens, and some algae such as spirogyra. The filaments of spirogyra, upon maturation, break into small pieces or fragments, which grow into new individuals.​​​​

BINARY FISSION

During binary fission, the nucleus of the parent cell elongates and divides initially. Then a constriction starts to appear on the cell membrane, then the constriction starts widening and finally divides the parent cell into two almost equal halves or daughter cells. The daughter cells are identical to the parent cell.

Explanation:

Answer 2

$\huge{\underline{\mathtt{\red{A}\pink{N}\green{S}\blue{W}\purple{E}\orange{R}}}}$

There are a number of types of asexual reproduction including fission, fragmentation, budding, vegetative reproduction, spore formation and agamogenesis. Spore formation occurs in plants, and some algae and fungi, and will be discussed in additional concepts. Binary Fission in various single-celled organisms