Multiple Choice Questions

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Which animal has the longest gestation period?

  • Shark

  • Walrus

  • Elephant

  • Dog


C.

Elephant

Gestation period is the fetal development period from the time of conception until birth.

Elephant has the longest gestation period among the given animals. It is of about 624- 641 days.


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The given figure shows L.S of the seed of maize. What do A, B, C and D represent?

  • A : endosperm, B : scutellum, C : plumule, D : coleoptile

  • A : scutellum, B : pericarp, C : radicle, D : coleoptile

  • A : endosperm, B : scutellum, C : radicle, D : coleorrhiza

  • A : scutellum, B : pericarp, C : plumule, D : coleorrhiza


Select the correct statement.

  • Acetobacter aceti produces citric acid

  • Saccharomyces cerevisiae is used as clot buster

  • Penicillium notatum restrict the growth of Staphylococci

  • Methanogens are found in aerobic conditions


Which of the following diseases is also called Christmas disease?

  • Sickle-cell anaemia

  • Haemoglobinuria

  • Myocardial infarction

  • Haemophilia- B


Which of the following is correct?

  • All fungi are filamentous.

  • Transfer of DNA from one bacteria to another bacteria cannot take place

  • Virus cannot have both DNA and RNA

  • Protists reproduce asexually only


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CD-4 receptor is associated with

  • AIDS

  • Cancer

  • Malaria

  • Pneumonia


What do A, B, C and D represent?

  • A- Infundibulum; B- Fertilization; C- Myometrium; D- Morula

  • A- Infundibulum; B- Fertilization; C- Endometrium; D- Blastocyst

  • A- Isthmus; B- Fertilization; C- Myometrium; D- Blastocyst

  • A- Isthmus; B- Fertilization; C- Endometrium; D- Morula


What is a plasmid?

  • Bacterial, linear, dsDNA

  • Extrachromosomal linear RNA

  • Extrachromosomal circular dsDNA

  • Autonomously replicating circular RNA


The concept of chemical evolution is based on

  • interaction of water, air and clay under intense heat

  • effect of solar radiation on chemicals

  • possible origin of life by combination of chemicals under suitable environmental conditions

  • crystallization of chemicals


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Which of the following is a correct match between crop, variety and resistance to diseases?

  • Crop Variety Resistance to diseases
    Wheat Himgiri White rust
  • Brassica Pusa sadabahar Black rot
  • Cowpea Pusa komal Bacterial blight
  • Chilli Pusa swarnim Chilly mosaic virus