Passage cells help in

• transport of water towards pericycle

• transport of water towards epiblema

• absorption of water from soil

• passage of CO₂ towards stomata

Which one of the followings is an in situ method of biodiversity conservation?

• National park

• Botanical garden

• Zoological garden

• Scientific laboratory

Nucleosome contains

• Only histone protein

• Both DNA and histone protein

• Only DNA

• Both DNA and RNA

All of the following symptoms are found in jaundice except

• disorders of hepato-biliary system

• abnormal secretion of pancreatic and gastric juices

• bile duct obstruction

• anaemia

Which one of the following combinations acts as a usual antigen binding site of an antibody?

• Variable regions of a light and another heavy chain

• Variable regions of two light chains

• Variable regions of two heavy chains

• Variable region of a heavy chain and constant region of a light chain

96.

What will be the percentage of guanine in a DNA molecule having 20% adenine?

• 20%

• 30%

• 40%

• 60%

Neoteny refers to

• development of gonads

• moulting

• metamorphosis

• retention of larval traits in the adult body

The overlapping zone in between two ecosystems is known as

• ecozone

• biotope

• ecotone

• buffer zone

The animal species controlling the ecosystem functioning is known as

• edge species

• pioneer species

• keystone species

• umbrella species

Central dogma in molecular biology is

• RNA $\to$ DNA $\to$ Protein

• DNA $\to$ RNA $\to$ Protein

• RNA $\to$ Protein $\to$ DNA

• DNA $\to$ Protein $\to$ RNA