50 questions · timed · auto-graded


Multinucleate muscle fibre: Striated muscle fibres which are present in limbs, tongue, hands.
Spindle shaped Fibre: Unstriated muscle fibres which are present in iris of the eye, bronchi.
Explanation:
The striated muscle cells are long, cylindrical, unbranched and multinucleate.
Explanation:
Nerve impulse travel along the axons and dentrites. Nerve impulses enter a neuron along the dentrites and leave the neuron along the axon. Thus, the correct sequence through which nerve impulse is transmitted is: dendrites, cell body, axon, nerve endings.
Explanation:
A coverslip must always be places very gently while mounting in order to avoid the entry of air bubbles.
Apical meristem: Shoot apes.
Lateral meristem: Cambium.
Explanation:
Parenchyma cells are living and thin walled. They are oval, spherical or polygonal in shape. They have large, intercellular space between the cells.
Explanation:
Sclarenchyma is a long, dead cell with a deposite of lignin on their cell wall. They have no intercellular space. Sclarenchyma occur around the vascular tissue in stems, in the veins of leaves and in the covering of seeds and nuts. they provide strengths to plant.