Biology Mock Te...

Asexual reproduction by conidia occurs in

Which of the following statements is/are correct?

1. All organisms have to reach a certain stage of growth and maturity in their life before they can reproduce sexually and that period of growth is called the vegetative phase in plants.

2. Bamboo species flower only once in their lifetime, generally after 50-100 years, produce a large number of fruits and die.

Which floral part in the plants produces the pollen grains?

Self-pollination will lead to _______.

In plant reproduction, a fusion of the second male gamete with secondary nucleus forms this structure with this nuclear condition

A true fruit develops from the

Which of the following is not true regarding the spermatogenesis process?

Consider the following statements related to the female reproductive system.

1. There are two ovaries and one fallopian tube on each side of the uterus.

2. The embryo gets nutrition from the mother’s blood and generates waste substances of its own.

Which among the above is/are correct?

Corpus luteum is formed from:

Which group of hormones are produced in women during pregnancy only

Amniocentesis, a prenatal diagnostic test used for determining foetal sex, genetic anomalies and biochemical abnormalities, is based on:

Which of the following is a birth control device used by a male?

Mendel's law of independent assortment can be demonstrated by

Consider the following statements :

1. Pleiotropy is the phenomenon of a single gene influencing two or more distinct phenotypic traits

2. Phenylketonuria is a disease resulting from pleiotropy which is caused by a mutation of the gene.

Which of the statements given above is/are correct?

The human sex chromosomes determine the gender of the child, with XX being:

A test cross is performed to determine the

A normal human being has 46 chromosomes. If a person is found to have 45 chromosomes, which of the following disorder is he having?

Which of the following are the salient features of the Double-helix structure of DNA?

1. The two chains have antiparallel polarity.

2. The bases in two strands are paired through hydrogen bonds (H-bonds) forming base pairs (bp). 

3. The two chains are coiled in a right-handed fashion.

Select the correct answer using the code given below.

Consider the following statements:

1. In a typical nucleus, some regions of chromatin are loosely packed are referred to as euchromatin.

2. The chromatin that is more densely packed and stains dark are called Heterochromatin.

Which of the statements given above is/are correct?

t-RNA differs from the remaining types in being

Select the correct match

Consider the following statements regarding Genome Sequencing:

1. Genome sequencing is figuring out the order of DNA nucleotides, or bases, in a genome—the order of Adenine, Cytosine, Guanines, and Thymine that make up an organism's DNA.

2. Human genome is made up of 46 chromosome pairs with a total of about 3 billion DNA base pairs.

3. There are 24 distinct human chromosomes: 22 autosomal chromosomes, plus the sex-determining X and Y chromosomes.

Which of the statements given above is/are correct?

Name the famous biologist with whom the Galapagos Islands is associated.

Fore limb in whale is called as

According to Neo-Darwinism which one is responsible for evolution of organisms?

Choose the correct answer using the codes given below

Assumptions underlying Weinberg equilibrium are

(A) Organisms are diploid.

(B) The population size is infinitely large.

(C) Mating is random.

The infective stage of malarial parasite is

A person, who is transfused with blood plasma proteins from someone who has been actively immunized against a specific antigen, is considered to have ________.

Morphine and codeine are extracts obtained from a hallucinogenic plant. Which of the following is a source of morphine and codeine?

Which of the following statements are correct?

In Honey bees

1. Males are haploid.

2. Workers are sterile and diploid.

3. Queen develops from diploid larvae that fed on royal jelly.

4. Honey is collected/made by males.

Select the correct answer using the code given below:

Which of the following is/are correct regarding plant tissue culture?

1. It involves growing new plants by separating cells from the growing tip of a plant.

2. It involves the use of an artificial nutrient medium.

3. Using tissue culture, many plants can be grown from one parent.

Select the correct answer using the code given below.

Brewer’s yeast's scientific name is _______

Which of the following enzymes are used for manufacturing detergents

The bacterium usually used for the production of acetic acid is _______

Following enzymes/techniques are used in the process of recombinant DNA technology

A. EcoRI to cut the isolated genome

B. DNA ligase

C. Protease and ribonuclease for removal of proteins and RNA from DNA

D. Production of recombinant hosts

E. Lysozyme for isolation of the genetic material (DNA)

F. Gel electrophoresis for separation and isolation of DNA 

Mark the correct sequence of their use

For transformation, micro-particles coated with DNA to be bombarded with gene gun are made up of

Polymerase chain reaction is most useful in

The role of DNA ligase in the construction of a recombinant DNA molecule is

Genetically engineered bacteria are being employed for production of

Which one of the following vectors is used to replace the defective gene in gene therapy 

Lizards goes into a long, deep sleep in ________ season.

Human population growth is

Which of the following is NOT an abiotic factor affecting animal life?

In an aqueous environment, the microscopic animals are collectively called

The reservoir for the gaseous type of biogeochemical cycle exists in

According to Robert Costanza, 50% of the total cost for ecosystem services goes to

Which part of the world has a high diversity of organisms

The extinction of passenger pigeon was due to

Consider the following statements regarding electrostatic precipitator.

1. An electrostatic precipitator can remove over 60 per cent particulate matter present in the exhaust from a thermal power plant. 

2. It has electrode wires that are maintained at several thousand volts, which produce a corona that releases electrons.

Which of the statement given above is/are correct?

Which of the following statements about forests is not correct?