A health disorder that results from the deficiency of thyroxine in adults and characterized by (i) a low metabolic rate (ii) increase in body weight and (iii) tendency to retain water in tissue is:

1

(a)

Cretinism

(b)

Hypothyroidism

(c)

Simple goitre

(d)

Myxoedema

Residual persistent nucellus is known as

1

(a)

perisperm

(b)

pericarp

(c)

integuments

(d)

none of these

At the time of shedding, the number of nuclei present in an angiosperm pollen grain is

1

(a)

one

(b)

one or two

(c)

two or three

(d)

only two

The amount of fresh water of the earth frozen as polar or glacial ice is

1

(a)

0.5%

(b)

0.02%

(c)

0.01%

(d)

1.97%

(e)

2.5%

A person likely to develop tetanus is immunised by administering:

1

(a)

Weakened germs

(b)

Dead germs

(c)

Preformed antibodies

(d)

Wide spectrum antibodies

Alzheimer disease in humans is associated with the deficiency of

1

(a)

Gamma-aminobutyric acid (GABA)

(b)

Dopamine

(c)

Glutamic acid

(d)

Acetylcholine

Which one of the following is not observed in biodiversity hotspots?

1

(a)

lesser inter-specific competition

(b)

species richness

(c)

endemism

(d)

accelerated species loss

Hotspots of biodiversity means

1

(a)

area of the earth that contains many endemic species

(b)

species servers as a proxy for entire communities in particular area

(c)

species in particular niche/area

(d)

species diversity at particular area

The biogenetic law of Hackel is

1

(a)

Omnis vivum-e-vivum

(b)

Omnis cellula-e-cellula

(c)

Ontogeny repeats phylogeny

(d)

Phylogeny repeats ontogeny

Biodiversity of a geographical region represents

1

(a)

endangered species found in the region

(b)

the diversity of the organisms living in the region

(c)

genetic diversity in the dominant species of the region

(d)

species endemic to the region

Which one of the following areas in India, is a hotspot of biodiversity

1

(a)

Eastern Ghats

(b)

Gangetic plain

(c)

Sunderbans

(d)

Western ghats

Evolutionary history of an organism is known as

1

(a)

ontogeny

(b)

phylogeny

(c)

ancestry

(d)

paleontology

A connecting link between reptiles and birds is

1

(a)

Dimetrodon

(b)

Dodo

(c)

Archaeopteryx

(d)

Sphenodon

Xenograft means

1

(a)

A graft between two genetically identical individuals

(b)

A graft in which a tissue is grafted from one individual to another individuals of the same species

(c)

A graft between individuals of different species

(d)

Tissue grafted from one area to another of the same individual

Total number of identified biodiversity hotspots in the world is

1

(a)

25

(b)

24

(c)

40

(d)

34