In Hatch and Slack pathway, the primary CO₂ acceptor is -

1. Oxaloacetic acid

2. Phosphoglyceric acid

3. Phosphoenol pyruvate

4. Rubisco

In which one of the following, both autogamy and geitonogamy are prevented?

1. Wheat

2. Papaya

3. Castor

4. Maize

Identify the possible link A in the following food chain.
Green plant$\to$Insect$\to$Frog$\to$A$\to$Eagle

1. Rabbit

2. Wolf

3. Cobra

4. Parrot

Which scientist experimentally proved that DNA is the sole genetic material in bacteriophage?

1. Beadle and Tatum

2. Messelson and Stahl

3. Hershey and Chase

4. Jacob and Monod

What will be the sequence of mRNA produced by the following stretch of DNA?

3' ATGCATGCATGCATG 5' TEMPLATE STRAND

5' TACGTACGTACGTAC 3' CODING STRAND

1. 3' AUGCAUGCAUGCAUG 5'

2. 5' UACGUACGUACGUAC 3'

3. 3' UACGUACGUACGUAC 5'

4. 5' AUGCAUGCAUGCAUG 3'

Which of the following is against the rules of ICBN?

Crossing over takes place between which chromatids and in which stage of the cell cycle?

Carnivorous animals - lions and leopards, occupy the same niche but lions predate mostly larger animals and leopards take smaller ones. This mechanism of competition is referred to as:

Where is the respiratory electron transport system (ETS) located in plants?

1. Mitochondrial matrix

2. Outer mitochondrial membrane

3. Inner mitochondrial membrane

4. Intermembrane space

The decline in the population of Indian native fishes due to the introduction of Clarias gariepinus in river Yamuna can be categorised as:

1. Co-extinction

2. Habitat fragmentation

3. Over exploitation

4. Alien species invasion