Match List I with List II:
| List I (Interaction) |
List II (Species A and B) |
||
|---|---|---|---|
| (A) | Mutualism | (I) | +(A), 0(B) |
| (B) | Commensalism | (II) | $$-$$(A), 0(B) |
| (C) | Amensalism | (III) | +(A), $$-$$(B) |
| (D) | Parasitism | (IV) | +(A), +(B) |
Choose the correct answer from the options given below:
Main steps in the formation of Recombinant DNA are given below. Arrange these steps in a correct sequence.
A. Insertion of recombinant DNA into the host cell
B. Cutting of DNA at specific location by restriction enzyme
C. Isolation of desired DNA fragment
D. Amplification of gene of interest using PCR
Choose the correct answer from the options given below :
Match List I with List II:
| List I | List II | ||
|---|---|---|---|
| (A) | Oxidative decarboxylation | (I) | Citrate synthase |
| (B) | Glycolysis | (II) | Pyruvate dehydrogenase |
| (C) | Oxidative phosphorylation | (III) | Electron transport system |
| (D) | Tricarboxylic acid cycle | (IV) | EMP pathway |
Choose the correct answer from the options given below :
Given below are two statements : One labelled as Assertion A and the other labelled as Reason R :
Assertion A : In gymnosperms the pollen grains are released from the microsporangium and carried by air currents.
Reason R : Air currents carry the pollen grains to the mouth of the archegonia where the male gametes are discharged and pollen tube is not formed.
In the light of the above statements, choose the correct answer from the options given below :