41.

Which one of the following methods is commonly used to maintain the genetic traits of a given plant

• By propagating through seed germination

• By propagating through vegetative multiplication

• By generating hybrids through intergeneric pollination

• By treating the seeds with gamma radiations

Match the triplet codons listed in column I with their amino acids mentioned in column II and select the correct option from the given codes.
          Column I             Column II
        A. GGG                    (i) Proline
        B. UUU                    (ii) Glycine
        C. CCC                    (iii) Arginine
        D. AAA                    (iv) Phenylalanine
                                      (v) Lysine

• A-(v), B-(iii), C-(i), D-(ii)

• A-(v), B-(iii), C-(i), D-(iv)

• A-(ii), B-(iv), C-(i), D-(v)

• A-(i), B-(ii), C-(iii),D-(iv)

Refer to the given figure depicting a diseased condition in humans and name the worm causing this disease.

• Epidermophyton jloccosum

• Ascaris lumbricoides

• Wuchereria bancrofti

• Entamocba histolytica

After double fertilisation, a mature ovule has

• I diploid and I haploid cell

• 1 diploid and I triploid cell

• 2 haploid and I triploid cell

• 1 haploid and I triploid cell

A large quantity of urban sewage is drained into nearby village river. Which among the given conditions would happen after mixing of sewage into the river

(i) Biochemical oxygen demand (BOD) of receiving water body increases.

(ii) Dissolved oxygen of receiving water body decreases.

(iii) It will not cause mortality among fishes and other aquatic creatures.

(iv) It will lead to nutrient enrichment of receiving water body.

• (i), (ii) and (iii)

• (i), (ii) and (iv)

• (ii) and (iii) only

• (iii) and (iv) only

Which of the following evidences does not favour the Lamarckian concept of inheritance of acquired characters

• Absence of limbs in snakes

• Melanisation in peppered moth

• Presence of webbed toes in aquatic birds

• Lack of pigment in cave-dwelling animals

Which one of the following is a correct statement

• "Bt" in "Bt-cotton" indicates that it is a genetically modified organism produced through biotechnology.

• Classical plant breeding involves fusion of two somatic cells carrying desired genes.

• The anticoagulant hirudin is being produced from transgenic Brassica napus seeds.

• Golden rice is a transgenic variety of rice rich in vitamin E.

Keystone species deserve protection because these

• are capable of surviving in harsh environmental conditions

• indicate presence of certain minerals in the soil

• have become rare due to overexploitation

• play an important role in supporting other species.

Which of the following antibiotics is not correctly matched with the source from which it is obtained

• Penicillin                   Penicillium chrysogenum

• Bacitracin                Bacillus licheniformis

• Griseofulvin             Penicillium griseofulvurm

• Streptomycin          Bacillus griseus

Which of the following statements is correct regarding menstrual cycle

• LH induces rupturing of Graafian follicle.

• Proliferative phase is characterised by the increased production of progesterone.

• Corpus luteum secretes large amount of estrogen. 

• Both LH and FSH attain a peak level in secretory phase.