NET, IAS, State-SET (KSET, WBSET, MPSET, etc.), GATE, CUET, Olympiads etc.: Zoology MCQs (Practice_Test 110 of 112)
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- The reversal of body fluid is wel1-marked in which one of the following systems of Herdmania?
- Excretory system
- Digestive system
- Reproductive system
- Circulatory system
- During metamorphosis of an ascidian tadpole larva, diminution and the eventual complete disappearance of the tai with the contained notochord and caudal part of the nerve-cord is accomplished by
- autophagy
- Autolysis
- migration of cells from the tail region to the test of the adult
- reversal of the differentiated cells of the tail into a non-differentiated cellmass that secondarily forms the endostyle of the pharynx
- A schematic representation of a crosssection passing through the intestinal region of Branchiostoma is shown in the above figure. The structures marked X Y and Z are
- notochord, nerve cord and, intestine respectively
- nervecord, notochord and intestine respectively
- intestine, nerve cord and notochord respectively
- intestine, notochord and never cord respectively
- Jaw suspension in which the upper jaw is completely fused by its processes to the bony skull and the lower jaw is suspended from the upper jaw, is termed as
- amphistylic
- hyostylic
- autostylic
- autodiastylic
- The correct sequence the various strata of the epidermis of mammalian skin is
- Stratum corneum, stratum lucidum, stratum granulosum and stratum germinatum
- Stratum germinatum, stratum granulosum corneum and stratum lucidum
- Stratum granulosum, stratum lucidum. Stratum germinatum and stratum corneum
- Stratum lucidum, stratum corneum. Stratum granulosum and stratum germinatum
- Assertion (A) : The tympanic cavity of snakes and legless lizards is much smaller.
- Reason (R) : These animals employ direct contact with the ground as a means for the reception of seismic vibrations.
- 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 action of a competitive enzyme can be reversed by increasing the substrate concentration.
- Reason (R) : Competitive cozy me inhibitors compete with the substrate. Reacting reversibly with the enzyme.
- 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) : Foetal hemoglobin differs from the adult hemoglobin.
- Reason (R) : The alpha-chain of foetal hemoglobin has extra valine residue.
- 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) : Placenta is found in kangaroos.
- Reason (R) : Kangaroo belongs to the class Mammalia
- 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
- Micorsome is the collective name for
- Cytopiasmic cell organelle obtained after centrifugation of the cell
- Mass of substances biosynthesized in the cell
- Artificially generated disrupted membrane fragments of granular endoplasmic reticulum
- Group of ribosome-s participating in synthesis of polypeptide chains using the same m-RNA
- Match List I with List II and select the correct answer using the codes given below the lists:
Table Supporting: NET, IAS, State-SET (KSET, WBSET, MPSET, Etc.) , GATE, CUET, Olympiads Etc. : Zoology MCQs (Practice_Test 110 of 112) List-I List-II - Conduction of secretions of the different organelles in a cell
- Intracellular osmosis
- Exchange of granular material between the nucleus and the cytoplasm
- Nuclear pores
- Endoplasmic reticulum
- Cell membrane
- A
- B
- C
- 2
- 3
- 1
- 1
- 3
- 2
- 3
- 1
- 2
- 2
- 1
- 3
- In the most straightforward model of cellcell adhesion, cells with similar carbohydrate groups on their surface are bound together by a particular type of chemical that recognizes particular carbohydrate configuration. This chemical is
- DNA as informosomes
- Scialic acid
- Lectins
- Fibronectin
- In the basis of increasing numbers of legs possessed by animals, which one of the following indicates the correct sequence?
- Grasshopper, Palamnaeus, crayfish, millipede
- Palamnaeus, grasshopper, crayfish, millipede
- Crayfish, Palamnaeus, grasshopper, millipede
- Millipede, crayfish, grasshopper
- Palamnaeus
- Bilateral symmetry in a certain group of phylum Mollusca is lost due to
- rotation
- torsion
- reversion and rotation
- expansion and torsion
- Which one of the following echinoderms possesses a respiratory tree?
- Sea cucumber
- Starfish
- Feather star
- Sea urchin