Tag: movement

Questions Related to movement

The amoeboid movements result from_____________.

zoology skeleton and joints introduction to movement introduction to locomotion movement

  1. Interaction among actin, myosin, and ATP

  2. Coordinated beats of cilia

  3. Whip-like action of flagella

  4. Action by the mitotic spindle, similar to what happens during mitosis and meiosis

Show answer
Correct Option: A
Explanation:

Interaction among actin, myosin and ATP

The amoeba uses two mechanically distinct mechanisms to push itself forward a filopodia - lamellipodia mechanism that depends on action polymerisation and a bleb mechanism in which a local region of membrane where the cortical - cytoplasmic pressure generated by myosin. 

In mammals each half of Pedoral girdle consists of

zoology skeleton and joints introduction to movement introduction to locomotion movement

  1. Supra scapula

  2. Scapula

  3. Coracoid

  4. All the above

Show answer
Correct Option: D
Explanation:

The ventral part of each half of pectoral girdle is comprise three skeletal pieces scapula, supra scapula, and coracles.

In Amoeba, the conversion of plasma gel into plasma sol at the trailing end and the conversion of plasma sol into plasma gel at the advancing end explains

zoology skeleton and joints introduction to movement introduction to locomotion movement

  1. attachment to substratum

  2. contraction theory

  3. continuous viscosity changes

  4. theory of rolling movement

Show answer
Correct Option: A
Explanation:

Sol-gel theory explains that it is the method for producing solid material from small molecules. The process involves the conversion of monomers into a colloidal solution (sol) that acts as the precursors for an integrated network (or get) or either discrete particles or network polymers.

So, the correct option is 'attachment to substratum'.