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Which part of the alimentary canal of poultry is responsible for the grinding of food?

Biology

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  1. 1.1 Enzyme in human saliva that hydrolyzes starch.

    Salivary amylase (also known as ptyalin) breaks down starch into maltose in the mouth.
    Rennet curdles milk, pepsin digests proteins in stomach.
    Answer: A
    A

  2. 1.2 Enzyme in the wall of calf stomach for fermentation/curdling of milk to yogurt.

    Rennet (chymosin or rennin) from calf stomach lining coagulates milk proteins for yogurt and cheese production.
    Answer: B
    B

  3. 1.3 Enzyme that digests proteins (pepsin) and rennin in stomach HCl for milk curdling.

    Pepsin digests proteins into peptides in acidic stomach; rennin (rennet) curdles milk (both active in stomach). Combination of functions described matches C.
    Answer: C
    C

  4. 1.4 Process that mixes/pushes food through small intestine walls (emulsification, regurgitation, etc.).

    Peristalsis (wave-like contractions) and segmentation (mixing) move and mix food for absorption through small intestine walls.
    Answer: C
    C

  5. 1.5 Part of elementary canal of poultry responsible for function (rumination/storage/grinding).

    Poultry have no rumen/rumination (ruminants do); crop stores/moistens food, proventriculus secretes acid/pepsin, gizzard grinds food mechanically. Matches described roles.
    Crop (storage): B
    Gizzard (grinding): C
    Proventriculus (digestion): D
    B, C, D

  6. 1.6 Processes in elementary canal of farm animals for nutrient absorption.

    Diffusion (passive, e.g., lipids), but most nutrients (glucose, amino acids) use active absorption against gradient in small intestine.
    Answer: D
    D

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