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Biology · PYQ NEET UG 2019(2)
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Biology · PYQ NEET UG 2019(2)
Humans have acquired immune system that produces antibodies to neutralize pathogens. Still innate immune system is present at the time of birth because it
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Bicarpellary ovary with obliquely placed septum is seen in:
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Match the following RNA polymerases with their transcribed products: Column I: i. RNA polymerase I ii. RNA polymerase II iii. RNA polymerase III Column II: a. tRNA b. rRNA c. hnRNA Select the correct option from the following:
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Which of the following statements about methanogens is NOT correct?
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Carnivorous animals - lions and leopards, occupy the same niche but lions predate mostly larger animals and leopards take smaller ones. This mechanism of competition is referred to as -
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The maximum volume of air a person can breathe in after a forced expiration is known as:
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In the dicot root, the vascular cambium originates from:
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One scientist cultured Cladophora in a suspension of Azotobacter and illuminated the culture by splitting light through a prism. He observed that bacteria accumulated mainly in the region of:
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Match the items in Column-I with those in Column-II: Column-I (Structure) | Column-II (Example/Feature) i. Podocytes - a. Crystallised oxalates ii. Protonephridia - b. Annelids iii. Nephridia - c. Amphioxus iv. Renal calculi - d. Filtration slits Select the correct option from the following:
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Match the following genera with their respective phylum:\ni. Ophiura\na. Mollusca\nii. Physalia\nb. Platyhelminthes\niii. Pinctada\nc. Echinodermata\niv. Planaria\nd. Coelenterata\nSelect the correct option:
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Match the following cell structure with its characteristic feature:\na. Tight junctions i. Cement neighbouring cells together to form sheet\nb. Adhering junctions ii. Transmit information through chemical to another cells\nc. Gap junctions iii. Establish a barrier to prevent leakage of fluid across epithelial cells\nd. Synaptic junctions iv. Cytoplasmic channels to facilitate communication between adjacent cells \nSelect correct option from the following:
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Which of the following is against the rules of ICBN?
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Match the organisms in Column I with habitats in Column II. Column-I i. Halophiles ii. Thermoacidophiles iii. Methanogens iv. Cyanobacteria Column-II a. Hot springs b. Aquatic environment c. Guts of ruminants d. Salty areas Select the correct answer from the options given below:
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What initiation and termination factors are involved in transcription in eukaryotes?
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Match the items of Column I with Column II: Column I: i. XX-XO method of Sex Determination ii. XX-XY method of Sex Determination iii. Karyotype-45 iv. ZW-ZZ method of Sex Determination Column II: a. Turner's Syndrome b. Female heterogametic c. Grasshopper d. Female homogametic
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Which is the most common type of embryo sac in angiosperms?
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Artificial light, extended work-time and reduced sleep-time disrupt the activity of -
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A biocontrol agent to be a part of an integrated pest management should be
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The production of gametes by the parents, the formation of zygotes, the F₁ and F₂ plants, can be understood using
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A selectable marker is used to:
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What will be the direction of flow of water when a plant cell is placed in a hypotonic solution?
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Crossing over takes place between which chromatids and in which stage of the cell cycle?
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