Biology Today — May 2017

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COnTenTs Class XI Class XII Competition Edge Subscribe online atwww.mtg.in Send D.D/M.O in favour of MTG Learning Media (P) Ltd. ...

Heterosporous pteridophytes show certain characteristics, which are precursor to the ‘seed habit’ in gymnosperms. One of such ...

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(iii) Endosperm represents female gametophyte. (a) Statements (i) and (ii) are correct (b) Statements (ii) and (iii) are correct ...

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(c) archaebacteria that contain a monolayer of branched chain lipids in the cell membrane. (d) archaebacteria that possess histo ...

Based on cellular mechanisms there are two major types of regeneration found in the animals. Which one of the following is the ...

Match column I with column II and choose the correct option. Column I Column II (Scientist) (Concept) I. Meselson and Stahl A. ...

Match the source gland with its respective hormone and function and select the correct option. Source Hormone Function (a) Ante ...

The hormone used in a suspension culture is (a) 2, 4-D (b) BAP (c) NAA (d) none of these. Match column I with column II and cho ...

According to Steward’s starch hydrolysis theory, which one of the following is the principle reason for the opening of stomata ...

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Which one of the following is a pair of endangered species? (a) Garden lizard and Mexican poppy (b) Rhesus monkey and sal tree ...

Which of the following options correctly mentions mustard family and its characteristics? (a) Brassicaceae – tetramerous flower ...

Cleistogamy is advantageous because (a) hundreds of pollen grains are transferred by each visit of a pollinator (b) more effici ...

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Assertion : Anaerobic respiration sometimes occurs in our skeletal muscles during strenuous exercise. Reason : Pyruvic acid is ...

CHAPTER-5 : MORPHOLOGY OF FLOWERING PLANTS Multiple Choice Questions Select the incorrectly matched pair. (a) Creepers - stems ...

Assertion : Flowers are modified shoot, which perform sexual reproduction. Reason : Different whorls of flower are arranged suc ...