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प्रश्न
A student has to observe a permanent slide of binary fission in Amoeba. Find the correct sequence of steps given below for focussing the object under a microscope.
(a) Place the slide on the stage, look through the eye-piece and adjust the mirror to get proper illumination.
(b) Focus the slide sharp using fine adjustment screw
(c) Look through the eye-piece and raise the objective lens using coarse adjustment screw till the object is focussed.
(d) Look through the eye-piece and move the slide till the object is visible.
(A) d, c, b, a
(B) a, b, d, c
(C) a, d, c, b
(D) a, c, d, b
उत्तर
The correct order of steps is a, d, c, b.
The correct answer is C.
संबंधित प्रश्न
Name one organism which exhibits multiple fission type of reproduction.
Name one organism which reproduces by spore formation
What is a 'cutting' in respect of plants for propagation purposes?
A simple multicellular animal having tentacles which lives in freshwater usually reproduces by the asexual process of :
(a) binary fission
(b) spore formation
(c) budding
(d) fragmentation
Fill in the blank:
Budding produces cells of __________ size.
Describe regeneration in Planaria with the help of a suitable diagram.
Explain the term Vegetative propagation.
Give the name of the plant that reproduces vegetatively by: Underground stem
Explain the development of male gametophyte in angiosperms (diagram is not expected).
Describe the process of fertilization in angiosperms with the help of a diagram.
