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Academic Questions

An alga very rich in protein is

By Radhika Viswas on 30 Sep 21
  1. Spirogyra

  2. Ulothrix

  3. Oscillatoria

  4. Chlorella

Which one of the following has haplontic life cycle?

By Radhika Viswas on 28 Sep 21
  1. Funaria

  2. Polytrichum

  3. Ustilago

  4. Wheat

Which one is the wrong pairing for the disease and its causal organism?

By Radhika Viswas on 28 Sep 21
  1. Late blight of potato — Alternaria solani

  2. Black rust of wheat — Puccinia graminis

  3. Loose smut of wheat — Ustilago nuda

  4. Root-knot of vegetables — Meloidogyne sp.

Claviceps purpurea is causal organisms of

By Radhika Viswas on 28 Sep 21
  1. Smut of barley

  2. Rust of wheat

  3. Ergot of rye

  4. Powdery mildew of pea

Decomposers are organisms that

By Radhika Viswas on 28 Sep 21
  1. Illaborate chemical substances, causing death of tissues

  2. Operate in living body and simplifying organic substances of cells step by step

  3. Attack and kill plants as well as animals

  4. Operate in relay terms, simplifying step by step the organic constituents of dead body

Thermococcus, Methanococcus and Methanobacterium exemplify

By Radhika Viswas on 28 Sep 21
  1. Archaebacteria that contain protein homologous to eukaryotic core histones

  2. Archaebacteria that lack any histones resembling those found in eukaryotes but whose DNA is negatively supercoiled

  3. Bacteria whose DNA is relaxed or positively supercoiled but which have a cytoskeleton as well as mitochondria

  4. Bacteria that contain a cytoskeleton-afld ribosomes

Sickle cell anaemia is

By Radhika Viswas on 22 Sep 21
  1. An autosomal linked dominant trait

  2. Caused by substitution of valine by glutamic acid in the p^globin chain of haemoglobin

  3. Caused by a change in base pair of DNA

  4. Characterized by elongated sickle like RBCs with a nucleus

Removal of introns and joining the exdns in a defined order in a transcription unit is called

By Radhika Viswas on 22 Sep 21
  1. Splicing

  2. Tailing

  3. Transformation

  4. Capping

What is true about the isolated small tribal populations?

By Radhika Viswas on 22 Sep 21
  1. There is a decline in population as boys marry girls only from their own tribe

  2. Hereditary diseases like colour blindness do not spread in the isolated population

  3. Wrestlers who develop strong body muscles in their life time pass this character on to their progeny

  4. There is no change in population size as they have a large gene pool

E.coli about to replicate was placed in a medium containing radioactive thymidine for five minutes. Then it was made to replicate in a normal medium. Which of the following observation shall be correct ?

By Radhika Viswas on 21 Sep 21
  1. Both the strands of DNA will be radioactive

  2. One strand radioactive

  3. Each strand half radioactive

  4. None is radioactive

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