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प्रश्न
What is protandry?
उत्तर
Protandry is a condition in which anthers mature first, but the stigma of the same flower is not receptive at that time.
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संबंधित प्रश्न
Name one organism which exhibits multiple fission type of reproduction.
How are the modes for reproduction different in unicellular and multicellular organisms?
A feature of reproduction that is common to Amoeba, Yeast and Bacterium is that :
(a) they are all multicellular
(b) they are all unicellular
(c) they reproduce only sexually
(d) they reproduce asexually
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
Name the parts of the plants used to grow following flower: China rose
Asexual reproduction occurs by __________ cell division.
Distinguish between sexual and asexual reproduction.
Explain the importance of the reproduction process.
A piece of wet bread or bhakri kept in a humid place for 2-3 days, then
- What will you observe?
- State the scientific name of the living organism and write its characteristics.
Spirogyra reproduce by ______
