MCQ
Which are exclusively viviparous ?
- ABony fishes
- BCartilagenous fishes
- CSharks
- ✓Whales
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|
Column $I$ (Terms) |
Column $II$ (Features) |
| $A.$ Exocrine gland | $I.$ They help to stop substances fromleaking across a tissue |
| $B.$ Endocrine gland | $II.$ Hormones are secreted directlyinto the fluid bathing the gland |
| $C.$ Tight junctions | $III.$ They perform cementing to keepneighbouring cells together. |
| $D.$ Adhering junctions | $IV.$ Secretes mucus, saliva, earwax,oil, milk, digestive enzymes andother cell products |
$(i)$ They have a hard and non-pliable ground substance rich in calcium salts and collagen fibres.
$(ii)$ They support and protect softer tissues and organs.
$(iii)$ Osteocytes are present in the spaces called lacunae.
$(iv)$ They also interact with skeletal muscles attached to them to bring about movements.
Which of the following type of tissue is being described by above statements