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STD 11 - 4. Animal kingdom — BIOLOGY STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceBIOLOGYSTD 11 - 4. Animal kingdom1 Mark
MCQ
Which of the following represents the correct combination without any exception ?

Option Characteristics  Class
$(a)$ Sucking and circular mouth; jaws absent, integument without scales; paired appendages. Cyclostomata
$(b)$ Body covered with feathers; skin moist and glandular, fore-lims form wings; lungs with air sacs. Aves
$(c)$ Mammary gland; hair on body; pinnae; two pairs of limbs. Mammalia
$(d)$ Mouth ventral; gills without operculum; skin with placoid scales; persistent notochord. Chondrichthyes

 

  • A
    $(a)$ and $(b)$
  • B
    $(b)$ and $(c)$
  • C
    $(c)$ and $(d)$
  • ✓
    none of the above.
✓

Answer

Correct option: D.
none of the above.
d
None of the options is correct.

Cyclostomes do not have paired appendages. Skin in Aves is neither moist nor glandular. Only preen gland is present at the base of tail. Chondrichthyes members have gills without operculum, except Chimaera. Prototherian mammals do not have ear pinnae and aquatic mammals lack hindlimbs (like whales and dolphins).

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