Biology (Mixed Test)

Comprehensive biology quiz covering diverse topics including genetics, botany, cell biology, microbiology, and biochemistry

20 Questions Published

Questions

Question 1 Multiple Choice (Single Answer)

Which kind of interaction is shown by sea anemone and hermit crab?

  1. Symbiosis
  2. Amensalism
  3. Commensalism
  4. Parasitism
Question 2 Multiple Choice (Single Answer)

What is the advantage of velamen to the epiphytic plants?

  1. Photosynthesis
  2. Water absorption
  3. Respiration
  4. Water storage
Question 3 Multiple Choice (Single Answer)

Which of the following types of adventitious root modifications is found in Ipomoea batatas (sweet potato)?

  1. Tuberous roots
  2. Fasciculated roots
  3. Nodulose roots
  4. Moniliform roots
Question 4 Multiple Choice (Single Answer)

To which of the following categories does methanogens belong?

  1. Archaebacteria
  2. Cyanobacteria
  3. Phototropic bacteria
  4. Putrefaction bacteria
Question 5 Multiple Choice (Single Answer)

Which of the following types of substrate brings about the removal of a functional group from a substrate?

  1. Ligases
  2. Lyases
  3. Transferases
  4. Isomerases
Question 6 Multiple Choice (Single Answer)

In which of the following phases of meiosis I does synapsis occur?

  1. Leptotene
  2. Zygotene
  3. Pachytene
  4. Diplotene
Question 7 Multiple Choice (Single Answer)

Which of the following openings is guarded by mitral valve?

  1. Right auriculoventricular opening
  2. Left auriculoventricular opening
  3. Opening of pulmonary artery
  4. Opening of aorta
Question 8 Multiple Choice (Single Answer)

To which of the following protein categories does haemoglobin belong?

  1. Fibrous protein
  2. Chromoprotein
  3. Phosphoprotein
  4. Nucleoprotein
Question 9 Multiple Choice (Single Answer)

Coupling and repulsion are the two aspects of a single phenomenon called

  1. crossing-over
  2. linkage
  3. synapsis
  4. terminalization
Question 10 Multiple Choice (Single Answer)

Which of the following types of mutation is a reversible mutation?

  1. Point mutation
  2. Back mutation
  3. Forward mutation
  4. Lethal mutation
Question 11 Multiple Choice (Single Answer)

Which of the following characters is unique to pteridophytes?

  1. Vascular phanerogam
  2. Naked seed-bearing plant
  3. Non vascular plant
  4. Vascular cryptogam
Question 12 Multiple Choice (Single Answer)

Which of the following algae suppresses the growth of mosquito development?

  1. Spirogyra
  2. Spirulina
  3. Chara
  4. Volvox
Question 13 Multiple Choice (Single Answer)

Which of the following types of organisms is included in the Kingdom Monera?

  1. All unicellular organisms
  2. All viruses
  3. All microscopic organisms
  4. All prokaryotes
Question 14 Multiple Choice (Single Answer)

What is the Mendalian genotypic ratio of a monohybrid cross?

  1. 2 : 1
  2. 3 : 1
  3. 1 : 2 : 1
  4. 9 : 3 : 3 : 1
Question 15 Multiple Choice (Single Answer)

Which of the following types of stipule modifications is present in Acacia?

  1. Stipular spine
  2. Tendrilar stipule
  3. Foliaceous stipule
  4. Ochreate stipule
Question 16 Multiple Choice (Single Answer)

Mechanical support, enzyme circulation and protein synthesis are the main functions of

  1. peroxisomes
  2. glyoxysomes
  3. dictyosomes
  4. endoplasmic reticulum
Question 17 Multiple Choice (Single Answer)

Which of the following techniques is concerned with the separation of small quantity of organic substances on the basis of their mobility?

  1. Autoradiography
  2. Electrophoresis
  3. Chromatography
  4. Ultra-centrifugation
Question 18 Multiple Choice (Single Answer)

Which of the following pairs of nitrogen bases consititues the purines of DNA?

  1. Uracil and guanine
  2. Adenine and guanine
  3. Adenine and cytosine
  4. Uracil and adenine
Question 19 Multiple Choice (Single Answer)

The dome shaped wall separating the sporangium from the sporangiophore in mucor is called

  1. column
  2. columella
  3. elaters
  4. peristomium
Question 20 Multiple Choice (Single Answer)

Which of the following is true about the entropy of a living system?

  1. It always increases.
  2. It always decreases.
  3. It keeps constant.
  4. It varies constantly.