Most of the marine invertebrates are_____.

1. 1. Osmoconformers
   2. Osmoregulators
   3. Both depend upon the concentration of sea water
   4. All of these

Sapwood is formed from_____.

1. 1. Primary xylem
   2. Primary phloem
   3. Secondary phloem
   4. Secondary xylem

Which of the following are motile zooids in cnidarians?

1. 1. Medusae
   2. Polyps
   3. Both of these
   4. All of these

The property of water due to which it works as a temperature stabilizer and hence protect living organisms from sudden thermal changes is_____.

1. 1. High specific heat capacity
   2. High specific heat of vaporization
   3. Its Dipole nature
   4. Its liquid state

An insulin molecule consists of _____polypeptide chains?

1. 1. 0.5
   2. 1
   3. 2
   4. 3

Some bacteria ranging occasionally a size of 500 ?m in length are_____.

1. 1. Escherichia coli
   2. Mycoplasma
   3. Epulopiscuim
   4. Spirochetes

Hunger pangs usually begin _____after the previous meal.

1. 1. 12-24 hours
   2. 2-4 hours
   3. 6-8 hours
   4. 10-12 hours

Pigment present in red algae is_____.

1. 1. Fucoxanthin
   2. Phycoerythrin
   3. Phycocyanin
   4. Bilirubin

Ingestion of some water with food in Amoeba takes place by the process of _____.

1. 1. Endosmosis
   2. Phagocytosis
   3. Pinocytosis
   4. All of these

Which of the following is called black bread mold?

1. 1. Pilobolus
   2. Rhizopus
   3. Penicillium
   4. Neurospora