Which of the following are found in extreme saline
conditions?

• Archaebacteria

• Eubacteria

• Cyanobacteria

• Cyanobacteria

Select the mismatch :

• Frankia – Alnus

• Rhodospirillum – Mycorrhiza

• Anabaena – Nitrogen fixer

• Anabaena – Nitrogen fixer

Which of the following is made up of dead cells?

• Xylem parenchyma

• Collenchyma

• Phellem

• Phellem

Which cells of 'Crypts of Lieberkuhn' secrete antibacterial lysozyme?

• Argentaffin cells

• Paneth cells

• Zymogen cells

• Zymogen cells

Adult human RBCs are enucleate. Which of the following statement(s) is/are most appropriate explanation for this feature?

(a) They do not need to reproduce
(b) They are somatic cells
(c) They do not metabolize
(d) All their internal space is available for oxygen
transport

• Only (d)

• Only (a)

• (a), (c) and (d)

• (a), (c) and (d)

The hepatic portal vein drains blood to liver from

• Heart

• Stomach

• Kidneys

• Kidneys

7.

Which among the following are the smallest living cells, known without a definite cell wall, pathogenic to plants as well as animals and can survive without oxygen?

• Bacillus

• Pseudomonas

• Mycoplasma

• Mycoplasma

Which of the following options gives the correct sequence of events during mitosis?

• Condensation - nuclear membrane disassembly
  - crossing over - segregation - telophase

• Condensation - nuclear membrane disassembly
  -arrangement at equator - centromere
  division - segregation - telophase

• Condensation - crossing over - nuclear
  membrane disassembly - segregation -
  telophase

• Condensation - crossing over - nuclear
  membrane disassembly - segregation -
  telophase

Which one of the following statements is correct with reference to enzymes?

• Apoenzyme = Holoenzyme + Coenzyme

• Holoenzyme = Apoenzyme + Coenzyme

• Coenzyme = Apoenzyme + Holoenzyme

• Coenzyme = Apoenzyme + Holoenzyme

A temporary endocrine gland in the human body is

• Pineal gland

• Corpus cardiacum

• Corpus luteum

• Corpus luteum