Which one of the following is not the characteristic of mitochondria?

1. 1. It contains F1 particles
   2. Number of mitochondria is constant
   3. It is a self replicating organelle
   4. It is involved in the synthesis of protein

Which of the following is present in all the living things?

1. 1. DNA or RNA
   2. Vacuole
   3. Cell nucleus
   4. Cell membrane

Ribosomal RNA (rRNA) constitutes _____ of the total cellular RNA.

1. 1. 10-20%
   2. 80%
   3. 3-4 %
   4. 90%

What is Chemically auxins?

1. 1. Indole propionic acid
   2. Indole acetaldehyde
   3. Indole carboxylic acid
   4. Indole acetic aci

The process in which a sperm joins with an egg is _____.

1. 1. Pollination
   2. Asexual reproduction
   3. Fertilization
   4. Respiration

Which of the following chemical component has the greatest contribution in the total mammalian cell weight?

1. 1. Water
   2. Proteins
   3. Lipids
   4. Carbohydrate

Connective tissues is / are _____.

1. 1. blood
   2. cartilage
   3. bone
   4. all the above

The first cell of the sporophyte generation is _____.

1. 1. Gamete
   2. Oospore
   3. Spore mother cell
   4. None of these

Among the following, which virus has special affiliations with the tumor production?

1. 1. Polio virus
   2. Retrovirus
   3. Hepatitis virus
   4. Pox virus

Prechordates is another name used for_____.

1. 1. Vertebrates
   2. Echinoderms
   3. Chordates
   4. Hemichordates