NET, IAS, State-SET (KSET, WBSET, MPSET, etc.), GATE, CUET, Olympiads etc.: Zoology MCQs (Practice_Test 67 of 112)
Doorsteptutor material for competitive exams is prepared by world's top subject experts: get questions, notes, tests, video lectures and more- for all subjects of your exam.
- Assertion (A) : Administration of vasopressin leads to an increase in the production of urin.
- Reason (R) : Vasopressin increases the permeability of the distal renal tubules to water
- Both A and R are true and R is the correct explanation of A
- Both A and R are true but R is not a correct explanation of A
- A is true but R is false
- A is false but R is true
- Assertion (A) : When marine turtles come to the shore, drops of secretion are seen pouring out of their eyes.
- Reason (R) : It helps to eliminate salt from their bodies
- Both A and R are true and R is the correct explanation of A
- Both A and R are true but R is not a correct explanation of A
- A is true but R is false
- A is false but R is true
- Assertion (A) : Ingested alcohol suppresses AD.
- Reason (R) : Suppression of ADH causes increased urine flow
- Both A and R are true and R is the correct explanation of A
- Both A and R are true but R is not a correct explanation of A
- A is true but R is false
- A is false but R is true
- Assertion (A) : The rate of the cleavage is inversely proportional to the amount of yolk in the eg.
- Reason (R) : Inhibition of the formation of cleavage furrows is dependent on the amount of yolk
- Both A and R are true and R is the correct explanation of A
- Both A and R are true but R is not a correct explanation of A
- A is true but R is false
- A is false but R is true
- Assertion (A) : In Branchiostoma, the origin of coelome is enterocoeli.
- Reason (R) : In Branchiostoma, coelome is formed by the splitting of mesodermal sheet
- Both A and R are true and R is the correct explanation of A
- Both A and R are true but R is not a correct explanation of A
- A is true but R is false
- A is false but R is true
- Assertion (A) : Neotenic larva is found in Ambystoma mexicanu.
- Reason (R) : Ambystoma mexicanum attains sexual maturity only in adult stage
- Both A and R are true and R is the correct explanation of A
- Both A and R are true but R is not a correct explanation of A
- A is true but R is false
- A is false but R is true
- Assertion (A) : Although individuals of the same species are similar, yet the members of a population forming a species show considerable variation.
- Reason (R) : In nature, mutations do occur to initiate speciation
- Both A and R are true and R is the correct explanation of A
- Both A and R are true but R is not a correct explanation of A
- A is true but R is false
- A is false but R is true
- Match List I (cellular components) with List II (their descriptions) and select the correct answer
Table Supporting: NET, IAS, State-SET (KSET, WBSET, MPSET, Etc.) , GATE, CUET, Olympiads Etc. : Zoology MCQs (Practice_Test 67 of 112) List-I List-II - Nucleosome
- Konetochore
- Chromomere
- The core of nuclear material containing granules which may be darkly stained with basic dayes
- A histone octamer associated with DNA
- Disc-shaped protein structure associated with centromeric chromatin
- Bead-like accumulation of chromatin sometimes visible along chromonema
- A
- B
- C
- 1
- 4
- 3
- 2
- 3
- 4
- 1
- 4
- 2
- 2
- 1
- 4
- Match List I (stains) with List II (cellular entities) and select and correct answer using the codes below the lists:
Table Supporting: NET, IAS, State-SET (KSET, WBSET, MPSET, Etc.) , GATE, CUET, Olympiads Etc. : Zoology MCQs (Practice_Test 67 of 112) List-I List-II - Methylene Blue
- Pyronin
- Janus Green B
- Eosin
- Cytoplasm
- Mitochondria
- Golgi complex
- Nucleolus
- A
- B
- C
- D
- 4
- 3
- 1
- 2
- 3
- 4
- 2
- 1
- 3
- 4
- 1
- 2
- 4
- 3
- 2
- 1
- Specialised structures that form around the apical circumference of adjoining cells, sealing off the access from the outside to the space between the cells are called
- tight junctions
- desmosomes
- gap junctions
- zonula adhaerens
- Mitochondrial genome (DNA)
- does not encode for any protein
- encodes for all the proteins required for the structural organisation of the organelle
- encodes all the proteins required for various functions of the organelle
- encodes only a limited number of proteins associated with the structure and functions of the organelle
- The process of cancer cells into vessels of the circulatory or lymphatic systems which allows them to move throughout the body, establishing secondary tumours in called
- oncogenesis
- metastasis
- lymphoma
- hybridoma
- The function of tyhe nucleolus in the cell is
- synthesis of RNA and ribosomes
- synthesis of DNA
- secretory
- biogenesis of ribosomes and synthesis of RNA protein
- Match List I with List II and select the correct answer
Table Supporting: NET, IAS, State-SET (KSET, WBSET, MPSET, Etc.) , GATE, CUET, Olympiads Etc. : Zoology MCQs (Practice_Test 67 of 112) List-I List-II - Pairing of homologous Chromosomes
- Actual interchange of segments between two homologous chromosomes
- Protein body formed between paired homologues
- The cross-shaped configuration visible at diplotene between homologues
- Chiasmata
- Synaptonemal complex
- Synapsis
- Crossing-over
- A
- B
- C
- D
- 4
- 3
- 1
- 2
- 3
- 4
- 1
- 2
- 3
- 4
- 2
- 1
- 4
- 3
- 2
- 1
- During cell division, mitochondria
- accumulate near the spindle and form rings around the myofibnllar bands in the muscle cell
- split into two equal halves in readiness to migrate to each daughter cell
- arrange themselves at the equator and twist to form coils
- migrate to terminal poles on long threads and split vertically