A mass m moving horizontally (along the x-axis) with velocity v collides and sticks to mass of 3m velocity 2v. The final velocity of the combination is
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(a) 1/4 vi + 3/2 […]
The technique called gamete intrafallopian transfer (GIFT) is recommended for those females :
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(a) who cannot produce ovum (b) who cannot retain the foetus inside uterus. (c) whose cervical canal is too […]
What is the common between vegetative reproduction and apomixis?
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(a) Both are applicable to only dicot plants. (b) Both bypass the flowering phase (c) Both occur round the year (d) Both produces […]
Read the following four statements (A-D).
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(a) Both, photophosphorylation and oxidative phosphorylation involve uphill transport of protons across the membrane (b) In dicot stems, a new cambium originates from cellls of pericycle […]
Three of the following pairs of the human skeletal parts are correctly matched with their respective inclusive skeletal category and one pair is not matched. Identify the non-matching pair.
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(a) Sternum and Ribs […]
What happens during fertilisation un humans after many sperms reach close to the ovum?
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(a) Secretions of acrosome helps one sperm enter ctoplasm of ovum through zona pellucida (b) All sperms except […]
Which one of the following statements is false in respect of viability of mammalian sperm?
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(a) sperm is viable for only up to 24 hours. (b) survival of sperm depends on the […]
The cross in plants or in Drosophila involves crossing
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(a) between two genotypes with recessive trait (b) between two F₁ hybrids (c) the F₁ hybrid with a double recessive genotype (d) between […]
Select the correct statement with respect to diseases and immunisation?
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(a) If due to some reason B-and T-lymphocytes are damaged, the body will not produce antibodies against a pathogen (b) Injection of […]
Which one of the following option gives the correct matching of a disease with its causative organism and mode of infection. Disease – Causative – Mode of Organisms Infection
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(a) Typhoid-Salmonella typhii-With […]
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