A	Silurian	I	Seed plants appear
B	Devonian	II	Gymnosperms dominant
C	Carboniferous	III	Invasion of land by primitive land plants
D	Jurassic	IV	first reptiles

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#Question id: 68

#Unit 1. Molecules and their Interaction Relevant to Biology

Match the following functional groups given in column I with their respective representatives given in column II.

COLUMN I               COLUMN II

1. Anhydride               a. RCOOR

2. Ether                       b. ROCOCH3

3. Acetyl                     c. ROR

4. Amido                     d. RCOOCOR

5. Ester                        e. RCONH2

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#Question id: 7289

#Unit 1. Molecules and their Interaction Relevant to Biology

The following scheme shows the flowering status of a plant species and the photoperiodism. Which of the following conclusions is most appropriate?

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#Question id: 15690

#Unit 1. Molecules and their Interaction Relevant to Biology

Choose the incorrect statement for the matrix 

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#Question id: 27394

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following has smallest size

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#Question id: 27393

#Unit 1. Molecules and their Interaction Relevant to Biology

In an exothermic reaction………a…….. and in endothermic reaction …………b………

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#Question id: 27392

#Unit 1. Molecules and their Interaction Relevant to Biology

Match the following

Bond	Bond energy in KJ
I. C=C	a. 891
II. C ≡ O	b. 946
III. N≡N	c. 1080
IV. C≡N	d. 611