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Biology MCQs Quiz Tests
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Q.1: Of the following which one is not the characteristic of triploblasts ?
- All of them have blood vascular system
- They may be coelomate pseudocoelomate or acoelomate
- They are included in grade bilaterian
- All of them have digestive system
A
Q.2: Antheridia and archegonia are born on -------------- in bryophytes ?
- Sporophyte
- Gametophyte
- Both of these
- None of these
B
Q.3: mitochondria in ear lobe cells are nearly-------- ?
- 40
- 50
- 55
- 60
B
Q.4: Circulatory system is open type in all of the following except:------- ?
- Arthropoda
- Gastropoda
- Pelecypoda
- Cephalopoda
D
Q.5: All the animals of the grade radiata are------- ?
- Diploblastic
- Triploblastic
- Both
- Unicellular
A
Q.6: The internal buds are known as------- ?
- Spicules
- Choanocytes
- Gemmules
- None of these
C
Q.7: Inner layers of the sponges are made up of------- ?
- Pinacocytes
- Choanoderm
- Choanoytes
- Pinacoderm
C
Q.8: The skeleton of sponges is made up of------- ?
- Calcium
- Silica
- Both of these
- None of these
C
Q.9: Which of the following fishes contained lungs ?
- Lamprey
- Perch
- Plaice
- Dipnoi
D
Q.10: Main blood vessel of arthropods usually ?
- Lies on dorsal side
- Lies on ventral side
- Lies on lateral side
- Is not present
A
Q.11: Enteron in coelenterates acts as-------- ?
- Digestive cavity
- Body cavity
- Transporting cavity
- all of these
D
Q.12: Polychaeta have--------- ?
- Tentacles
- Palps
- Eyes
- All of these
D
Q.13: Prechordates is another name used for-------- ?
- Echinoderms
- Hemichordates
- Vertebrates
- Chordates
B
Q.14: The number of chromosomes in human cell is--------- ?
- 48
- 44
- 46
- 26
C
Q.15: The organs of locomotion in annelids are------ ?
- Muscles
- Hydrostatic skeleton
- Parapodia
- Setae
D
Q.16: Which of the following acts as thermoregulator ?
- Cerebrum
- Cerebellum
- Thalamus
- Hypothalamus
D
Q.17: Which of the following feature is not related to neuron ?
- Conduction
- Regeneration
- Reflex
- Movement
B
Q.18: What is the function of synapse---------- ?
- To allow nerve impulse to move in backward direction
- To decrease the speed of nerve impulse
- To stop the nerve impulse
- To provide cytoplasmic connection between neurons.
B
Q.19: In an aqueous environment the most stable tertiary conformation is that in which --------- amino acids are buried inside the conformation ?
- Hydrophobic
- Hydrophilic
- Basic
- None of these
A
Q.20: The simplest of oxygen producting photosynthetic organisms are------- ?
- Algae
- Bacteria
- Cyanobacteria
- Chlamydomonas
C