Animals giving birth to young ones:

(a)

Oviparous

(b)

Oviviviparous

(c)

Viviparous

(d)

Both a and b

The site of embryo implantation is the _____.

(a)

Uterus

(b)

Peritoneal cavity

(c)

Vagina

(d)

Fallopian tube

Down's syndrome is a genetic disorder which is caused by the presence of an extra chromosome number _____.

(a)

20

(b)

21

(c)

4

(d)

23

A mRNA molecule is produced by _____.

(a)

Replication

(b)

Transcription

(c)

Duplication

(d)

Translation

An operon is a: ______.

(a)

Protein that suppresses gene expression

(b)

Protein that accelerates gene expression

(c)

Cluster of structural genes with related function

(d)

Gene that switched other genes on or off

The first life on earth originated

(a)

in air

(b)

on land

(c)

in water

(d)

on mountain

Choose the correctly match pair.

(a)

Amphetamines - Stimulant

(b)

LSD - Narcotic

(c)

Heroin - Psychotropic

(d)

Benzodiazepine - Pain killer

The first clinical gene therapy was done for the treatment of

(a)

AIDS

(b)

Cancer

(c)

Cystic fibrosis

(d)

SCID

Competition between species leads to

(a)

Extinction

(b)

Mutation

(c)

Amensalism

(d)

Symbiosis

A specific place in an ecosystem, where an organism lives and performs its functions is _____.

(a)

habitat

(b)

niche

(c)

landscape

(d)

biome

Strong, sharp spines that get attached to animal’s feet are found in the fruits of ______.

(a)

Argemone

(b)

Ecballium

(c)

Heritier

(d)

Crossandra

Which of the following is not a sedimentary cycle

(a)

Nitrogen cycle

(b)

Phosphorous cycle

(c)

Sulphur cycle

(d)

Calcium cycle

The unit for measuring ozone thickness _____.

(a)

Joule

(b)

Kilos

(c)

Dobson

(d)

Watt

Which of the following is incorrectly paired?

(a)

Wheat - Himgiri

(b)

Milch breed - Sahiwal

(c)

Rice - Ratna

(d)

Pusa Komal - Brassica

The active principle trans-tetra hydro canabiol is present in ______.

(a)

Opium

(b)

Curcuma

(c)

Marijuana 

(d)

Andrographis

AIDS virus has

(a)

Single stranded RNA

(b)

Double stranded RNA

(c)

Single stranded DNA

(d)

Double stranded DNA

What is parthenogenesis? Give two examples from animals.

Mention the differences between spermiogenesis and spermatogenesis

What are clones?

Distinguish habitat and niche

Sandy soil is not suitable for cultivation. Explain why?

Productivity of profundal zone will be low. Why?

Differentiate between primary introduction from secondary introduction.

Write the cosmetic uses of Aloe.

What is the composition of semen?

What are the three structural differences between RNA and DNA?

What are the factors that drive habitat loss?

Define the term Diplospory

What is seed ball?

Enumerate the uses of turmeric

Identify the given image and label its parts marked as a, b, c and d

List the advantages of biogas plants in rural areas.

Differentiate continuous variation with discontinuous variation.

What are the advantages of seed dispersal?