Question

LI
35. The diagram shows modes of asexual reproduction in animals.
Binary Fission Multiple Budding Regeneration Spore
Fission
Formation
Using the above diagram, answer the following questions:
i. Name one organism each which reproduces by binary fission and multiple fission.
ii. What is the difference between binary fission and multiple fission?
iii. How Planaria reproduces?
iv. In which reproductive method an organism produces an outgrowth on its body
surface?
V. How Rhizopus reproduces under suitable conditions?​

Answer 1

Explanation:

i. Amoeba reproduces by binary fission and Plasmodium by multiple fission.

ii.In binary fission, the parent cell divides itself into two equal and identical daughter cells. It is the most common form of reproduction in prokaryotes such as bacteria. In multiple fission, a single parent cell is divided into many daughter cells.

iii.Asexual freshwater planarians reproduce by tearing themselves into two pieces by a process called binary fission. The resulting head and tail pieces regenerate within about a week, forming two new worms.

iv.Budding is a form of asexual reproduction that results from the outgrowth of a part of the body leading to a separation of the “bud” from the original organism and the formation of two individuals, one smaller than the other. Budding occurs commonly in some invertebrate animals such as hydras and corals.

v. Rhizopus species grow as filamentous, branching hyphae that generally lack cross-walls (i.e., they are coenocytic). They reproduce by forming asexual and sexual spores. ... In sexual reproduction, a dark zygospore is produced at the point where two compatible mycelia fuse.

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Answer 2

Answer:

(i) Amoeba reproduce by binary fission and Plasmodium by multiple fission.

(ii) In binary fission, the parent cell splits itself into two equal and identical daughter cells.

In multiple fission, a single parent cell splits into many daughter cells.

(iii) Planaria reproduce by asexual type of reproduction which is known as Regeneration.

(iv) Budding is the type of asexual reproduction in which A small outgrowth develops on parents body as a bud. Bud develops as tiny individual and develops into new independent individual.

(v) Rizophus is an organism which reproduces by spore formation.

Spores are small bulb-like structure which are covered by thick wall.

These thick walls protect spore from unfavourable conditions.

Under favourable conditions, sporangium break and release spores.

Explanation:

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