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Question 1/50
5 / -1
Internal fertilisation occurs in
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Question 2/50
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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.
Which of the statements from above is/are correct?
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Question 3/50
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Minimum number of meiotic divisions required to obtain 100 pollen grains of wheat -
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Question 4/50
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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:
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Question 5/50
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Double fertilization is a rule of which plants?
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Question 6/50
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After fertilization, the seed coats develop from the
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Question 7/50
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Spermatogenesis in mammalian testes controlled by
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Question 8/50
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What is the age of menopause in women?
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Question 9/50
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The egg is carried from the ovary to the uterus by
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Question 10/50
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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.
Which of the statements given above is/are
not correct?
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Question 11/50
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The main objective of family welfare programme is
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Question 12/50
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Which of the following disease is transmitted sexually?
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Question 13/50
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Child with blood group ‘O’ has ‘B' group father and ‘A’ group mother. The father and mother have a genotype of :
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Question 14/50
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Mendel's work of genetics was based upon which of the following?
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Question 15/50
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Haemophilia is
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Question 16/50
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Which of the following represents the pair of sex chromosomes in men?
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Question 17/50
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______ is a chromosomal disorder that causes undeveloped feminine character and sterility
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Question 18/50
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In DNA, thymine always pairs with ______.
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Question 19/50
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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?
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Question 20/50
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The two complementary strands of DNA are held together by
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Question 21/50
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Peptide synthesis in a cell occurs in
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Question 22/50
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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.
Which of the above statements is/are incorrect?
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Question 23/50
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Evolution is best defined as
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Question 24/50
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(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.
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Question 25/50
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The tendency of population to remain in genetic equilibrium may be disturbed by
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Question 26/50
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Which of the following primates were found 15 mya and was more man-like?
1. Dryopithecus
2. Ramapithecus
Choose the correct code-
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Question 27/50
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Which of the following is not the causal organism for ringworm
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Question 28/50
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HIV cause reduction in ______ in AIDS patients
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Question 29/50
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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?
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Question 30/50
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The antibodies produced during allergy are
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Question 31/50
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Hybridization for the process of crop improvement can be ____________
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Question 32/50
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The process of selecting parents for obtaining special characters in their offspring is called:
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Question 33/50
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Which one of the following impurities is easiest to remove from wastewater
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Question 34/50
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Which of the following biofertilizer is added in rice fields?
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Question 35/50
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Which one of the following is not required for DNA-cloning?
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Question 36/50
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Small circular DNA molecules that are capable of self-replication are called
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Question 37/50
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‘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.
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Question 38/50
5 / -1
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
Select the correct answer using the code given below:
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Question 39/50
5 / -1
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.
Select the correct answer using the code given below:
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Question 40/50
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The drug produced through biotechnology for cancer treatment is
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Question 41/50
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Carrying capacity of a population is determined by
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Question 42/50
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The geographic limit within which a population exists is called
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Question 43/50
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In a grassland ecosystem, the population of
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Question 44/50
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Which of the following is a source of energy to an ecosystem
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Question 45/50
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In which of the following cycle does the reservoir of the nutrient exist in the Earth's crust?
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Question 46/50
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Which of the following statement is correct
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Question 47/50
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Wildlife conservation means the protection and preservation of
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Question 48/50
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The high amount of E. coli in water is the indicator of
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Question 49/50
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Which one of the following is not an air pollutant
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Question 50/50
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This is a non biodegradable pollutant