Biology Mock Te...

Internal fertilisation occurs in

Consider the following statements regarding sexual reproduction in plants:

1. Reproduction in plants takes place only through asexual methods.

2. Reproduction in spirogyra takes place through the process of fragmentation.

3. Vegetative propagation in plants can be achieved only by natural method.

Minimum number of meiotic divisions required to obtain 100 pollen grains of wheat -

With reference to Tapetum found in flowering plants, consider the following statements:

i. It is a specialised layer of nutritive cells found within the anther.

ii. It is important for the nutrition and development of pollen grains.

Select the correct answer using the code given below:

Double fertilization is a rule of which plants?

After fertilization, the seed coats develop from the

Spermatogenesis in mammalian testes controlled by

What is the age of menopause in women?

The egg is carried from the ovary to the uterus by

Consider the following statements regarding Respiration in Plants:

1. Estrogen plays a major stimulatory role in the process of spermatogenesis.

2. Androgens regulate female sexual behaviour.

The main objective of family welfare programme is

Which of the following disease is transmitted sexually?

Child with blood group ‘O’ has ‘B' group father and ‘A’ group mother. The father and mother have a genotype of :

Mendel's work of genetics was based upon which of the following?

Haemophilia is

Which of the following represents the pair of sex chromosomes in men?

______ is a chromosomal disorder that causes undeveloped feminine character and sterility 

In DNA, thymine always pairs with ______.

Consider the following statements:

1. DNA Polymerase uses a DNA template to catalyse the polymerisation of deoxynucleotides. 

2. Adenosine triphosphate (ATP) are an energy-carrying molecule found in the cells of all living things that captures chemical energy obtained from the breakdown of food molecules and releases it to fuel other cellular processes.

Which of the following statements given above is/are correct?

The two complementary strands of DNA are held together by

Peptide synthesis in a cell occurs in

Consider the following statements about DNA Sequencing:

1. DNA Sequencing is used to detect the presence of a complementary sequence by hybridization with a nucleic acid sample.

2. DNA sequencing is the process of determining the nucleic acid sequence - the order of nucleotides in DNA.

Evolution is best defined as

(i)_______ tells us how life evolved from simple to more complex forms and (ii)________ give us the mechanism for the inheritance of traits from one generation to the next.

The tendency of population to remain in genetic equilibrium may be disturbed by

Which of the following primates were found 15 mya and was more man-like?

1. Dryopithecus

2. Ramapithecus

Choose the correct code-

Which of the following is not the causal organism for ringworm

HIV cause reduction in ______ in AIDS patients

Transplantation of tissues/organs to certain patients often fail due to rejection of such tissues/organs by the patient. Which type of immune response is responsible for such rejections?

The antibodies produced during allergy are

Hybridization for the process of crop improvement can be ____________

The process of selecting parents for obtaining special characters in their offspring is called:

Which one of the following impurities is easiest to remove from wastewater

Which of the following biofertilizer is added in rice fields?

Which one of the following is not required for DNA-cloning?

Small circular DNA molecules that are capable of self-replication are called

‘RNA interference (RNAi)’ technology has gained popularity in the last few years. Why?

1. It is used in developing gene silencing therapies.

2. It can be used in developing therapies for the treatment of cancer.

3. It can be used to develop hormone replacement therapies.

4. It can be used to produce crop plants that are resistant to viral pathogens.

Select the correct answer using the code given below.

Genetically modified (GM) crops contain modified genetic material due to:

1. Introduction of new DNA

2. Removal of existing DNA

3. Introduction of RNA

4. Introduction of new traits

Consider the following statements regarding Genetically modified hormones

1. This technique enabled us to isolate any genes from any source in a pure form, and to move them from one cell to another.

2. We can produce viral and bacterial antigens of various types of cells by this method.

The drug produced through biotechnology for cancer treatment is

Carrying capacity of a population is determined by

The geographic limit within which a population exists is called

In a grassland ecosystem, the population of

Which of the following is a source of energy to an ecosystem

In which of the following cycle does the reservoir of the nutrient exist in the Earth's crust?

Which of the following statement is correct

Wildlife conservation means the protection and preservation of

The high amount of E. coli in water is the indicator of

Which one of the following is not an air pollutant

This is a non biodegradable pollutant