Which one of the following kinds of animals are tribalistic?

• Flatworms

• Sponges

• Ctenophores

• Ctenophores

The plasma membrane consist mainly of 

• phospholipids embedded in a protein bilayer

• Proteins embedded in a phospholipid bilayer

• proteins embedded in a polymer of glucose molecules

• proteins embedded in a polymer of glucose molecules

The scutellum observed in a grain of Wheat or maize is comparable to which part of the seed in other monocotyledons?

• Cotyledon

• Endosperm

• Aleurone layer

• Aleurone layer

Toxic agents present in food which interfere with thyroxine synthesis lead to the development of 

• toxic goitre

• cretinism 

• simple goitre

• simple goitre

Carrier ions like Na⁺ facilitate the absorption of substance like

• amino acids and glucose

• glucose and fatty acids

• fatty acids and glycerol

• fatty acids and glycerol

Which one of the following statements about certainly given animals is correct?

• Roundworms (Aschelminthes) are pseudocoelomates

• Molluscs are acoelomates

• insects are pseudocoelomates

• insects are pseudocoelomates

If for some reason our goblet cells are non -functional, this will adversely effect

• Production of somatostatin

• secretion of sebum from the sebaceous glands

• maturation of sperms

• maturation of sperms

The energy -releasing metabolic process in which substrate is oxidised without an external electron acceptor is called

• glycolysis

• fermentation

• aerobic respiration

• aerobic respiration

Which one of the following is not a lateral meristem?

• Intrafascicular cambium

• interfascicular cambium

• Phellogen

• Phellogen

Which one of the following statements about all the four of Spongilla, leech, dolphin and penguin is correct?

• Penguin is homoiothermic while the remaining three are poikilothermic 

• Leech is a fresh water from while all other are marine

• Spongilla has special collared cells called choanocytes, not found in the remaining three

• Spongilla has special collared cells called choanocytes, not found in the remaining three