Thursday, October 29, 2020

2018 March | HSE +1 Exam | Zoology - ANSWERS

 2018 MARCH (+1) 

ZOOLOGY: ANSWERS

1)   Kingdom← Phylum ← Class ← Order ← Family ← Genus ← Species.


2)   Placoid scales.


3)   (c) Retina


4)   (a) Serine

(b) Alanine


5)   Radial symmetry: Coelenterates, Ctenophores

Bilateral symmetry: Arthropods, Molluscs


6)   a) Glomerular Filtration Rate.

b) About 99% of the filtrate is reabsorbed by the renal tubules (Tubular reabsorption).


7)   Tibia, Femur, Tarsals, Fibula


8)   (a) Lysozyme

(b) Salivary amylase (Ptyalin).


9)   A= Crop

B= Hepatic caecae

C= Malpighian tubules

D= Colon


10) (a) Depolarisation of the ventricle (Ventricular systole).

(b) It is used to find out any deviation in the functioning of heart.


11) (a) Inspiratory reserve volume (IRV): Additional volume of air that can inspire by forceful inspiration.

Expiratory reserve volume (ERV): Additional volume of air that can expire by a forceful expiration.

(b) Inspiratory capacity (IC): Total volume of air inspired after a normal expiration.

Expiratory capacity (EC): Total volume of air expired after a normal inspiration.


12) (a) Peripheral Neural System (PNS)

(b) Spinal cord

(c) Autonomic Nervous system (ANS)

(d) Parasympathetic.


13) (a) Growth hormone (GH) or somatotropin

(b) Insulin

(c) Thyroxin

(d) ADH (Vasopressin)


14) (a) Adipose tissue

(b) Ligaments

(c) Tendon

(d) Neural tissue


15)    

A

B

C

a) Neutrophils

60 – 65%

Phagocytic

b) Eosinophils

2 – 3%

Allergic reaction

c) Lymphocytes

20 – 25%

Immune response

16) a)  (a) EP, (b) P

b)  Temperature, pH, concentration of substrate etc.

c)  (i) Oxidoreductases (Dehydrogenases).

     (ii) Lyases.

17) (a) A= Chymotrypsin

     B= Carboxypeptidase

(b) Pancreas

(c) A= Chymotrypsinogen

     B= Procarboxypeptidase


18)    

Pisces

Amphibia

Reptilia

Aves

Mammalia

Dogfish

Frog

Alligator

Penguin

Blue whale

Rohu

Salamander

Tortoise

Vulture

Flying fox

b)  Class Aves.

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