The telomeres of eukaryotic chromosomes consist of short sequences of:

1. Cytosine-rich repeats

2. Adenine-rich repeats

3. Guanine-rich repeats

4. Thymine-rich repeats

Which form of RNA has a structure resembling clover leaf?

A nutritionally wild type organism, which does not require any additional growth supplement is known as:

1. Holotype

2. Auxotroph

3. Prototroph

4. Phenotype 

Which of the following propagates through the leaf tip:

1. Sprout-leaf plant

2. Marchantia

3. Moss

4. Walking fern 

Common indicator organism of water pollution is:

1. Eichhornia crassipes

2. Escherichia coli

3. Entamoeba histolytica

4. Lemna pancicostata 

ELISA is used to detect viruses, where:

1. Southern blotting is done

2. Alkaline phosphatase is the key reagent

3. Catalase is the key reagent

4. DNA probes are required 

The phenetic classification of organisms is based on:

If you are provided with the root tips of onion in your class and are asked to count the chromosomes, which of the following stages can you most conveniently look into?

When a diploid female plant is crossed with a tetraploid male, the ploidy of endosperm cells in the resulting seed is:

1. Pentaploidy

2. Diploidy

3. Triploidy

4. Tetraploidy