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11th Standard English Medium Biology (Zoology) Subject Locomotion and Movement Creative 3 Mark Questions with Solution Part - II updated Creative Questions

Published on: 13/05/2022

QB365 provides detailed and simple solution for every Creative Questions in class 11 Biology Subject. It will helps to get more idea about question pattern in every Creative questions with solution.

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Std: 11th Standard - Biology

chapter: - Creative Questions

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Questions:

Generic 3

5 x 3 = 15

An exhausted student was attending a lecture. After 30 minutes or so, he lost interest and he let go with a tremendous yawn. To his great distress he couldn't close his mouth-his lower jaw was locked open. What do you think would have caused it?

Differentiate between actin and myosin filament.

Differentiate pelvis of male and female

What are the functions of the vertebral column?

Distinguish Red muscle fibres and white muscle fibres.

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Answers Key:

Generic 3

5 x 3 = 15

Sometimes the jaw remains open and does not close after yawning. This is due to dislocation of temporomandibular joint located between the temporal bone and mandible (hinge joint).

S.No	Actin Filament	Myosin Filament
1.	They are thin	They are thick.
2.	Cross-bridges are not seen.	Cross-bridges are seen.
3.	They occur in I-band.	They occur in A- band.
4.	It has low molecular weight	It has high molecular weight
5.	It is a globular protein	It is an polymerized protein.

The pelvis of male is deep and narrow with larger heavier bones and the female is shallow, wide and flexible in nature, and this helps during pregnancy which is influenced by female hormones.

The vertebral column protects the spinal cord, supports the head and serves as the point of attachment for the ribs and musculature of the back.

Red muscle fibres	White muscle fibres
1. They are dark red in colour due to presence of abundant myoglobin	They are Whitish since they have less myoglobin
2. Mitochondria are more in number but they have less sarcoplasmic reticulum.	Mitochondria are less in number but they have more sarcoplasmic reticulum.
3. They depend on aerobic process for energy.	They depend on anaerobic process for energy.