Question

explain locomotion and reproduction in amoeba.​

Answer 1

Answer:

LOCOMOTION IN AMOEBA :

The Amoeba moves from place to place by forming temporary finger-like projections called pseudopodia. A pseudopodium may form at any place upon the surface of the body. It appears as a blunt projection of ectoplasm.

The speed of locomotion usually ranges from 0-5 to 5 micra per second. In favourable condition the speed may be as high as 1 inch (25 mm.) per hour. It varies with the temperature, increasing slowly up to a temperature of 30°C. Movement totally ceases at 33°C.

Amoeba reproduces asexually by two different methods:

(1) Binary fission, and

(2) Multiple fission.

Binary fission is the usual mode of reproduction by which a full-grown parent individual divides into two daughter Amoebae. During binary fission, the Amoeba becomes spherical and is covered with small pseudopodia.

I

Usually binary fission is completed within half an hour at 24°C. If the temperature, is raised to 30°C the entire process is finished in 21 minutes. Fission is greatly retarded by low tem­perature, and the time required is slightly more than 4 hours at 4°C.

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