Which of the following are not secondary metabolites in plants?

Inspite of interspecific competition in nature, which mechanism the competing species might have evolved for their survival?

Amensalism can be represented as:

1. Species A (-) : Species B (-)

2. Species A (+) : Species B (0)

3. Species A (-) : Species B (0)

4. Species A (+) : Species B (+)

A typical angiosperm embryo sac at maturity is:

1. 7-nucleate and 7-celled

2. 8-nucleate and 8-celled

3. 8-nucleate and 7-celled

4. 7-nucleate and 8-celled

The first stable product of CO₂ fixation in sorghum is:

Plants follow different pathways in response to environment or phases of life to form different kinds of structures. This ability is called:

Match List - I with List - II

Choose the correct answer from the options given below.

       (a)       (b)       (c)      (d)

1.   (iii)       (iv)       (i)       (ii)

2.   (iv)       (iii)       (ii)      (i)

3.   (iii)        (iv)      (ii)      (i)

4.   (ii)         (i)        (iv)     (iii)

Which of the following is not an application of PCR (Polymerase Chain Reaction)?

1. Purification of isolated protein

2. Detection of gene mutation

3. Molecular diagnosis

4. Gene amplification

Which of the following algae produce Carrageen?
1. Red algae
2. Blue-green algae
3. Green algae
4. Brown algae

The production of gametes by the parents, formation of zygotes, the F₁ and F₂ plants, can be understood from a diagram called:

1. Punnett square

2. Net square

3. Bullet square

4. Punch square