471. The organism that survived evolution:
Cockroach

472. The second-largest animal in cat family:
Lion

473. What is known as ‘poor man’s cow’?
Goat

474. Which organism has a tongue longer than its body?
Calotes

475. Which organism is the symbol of cancer:
Crab

476. Fish that have hand and legs:
Latimer

477. Tusk of the elephant is a modification of:
Incisors

478. Ichthyology is the study of:
Fish

479. Emu is a native of:
Australia

480. The bird that lives in Rookery:
Penguin

481. Archiopterics are the ancestors of:
Birds

482. Which gland is known as Adam’s apple?
Thyroid

483. The bone above the elbow:
Humerus

484. The bones below the elbow:
Radius and Ulna

485. The bones below the knee:
Tibia and Fibula

486. The bone above the knee:
Femur

487. What is known as the ‘relay station of the brain’?
Thalamus

488. Jarvic -7 is the name of artificial……
Heart

489. The wavy motion of food through the alimentary canal is:
Peristalsis

490. Which gland is known as ‘biological clock’?
Pineal gland

491. The hormone that regulates water in the human body:
Vasopressin

492. What per cent of the total energy in the human body is utilized by the brain?
 20

493. The enzyme in the intestine that digests protein:
Pepsin

494. The plant food which is the richest source of protein:
Soyabean

495. What is known as the ‘blood bank in the human body’?
Spleen 50.

496. The substance that causes tears while handling onion:
Phosphorus

497. The bacteria found in the root nodules of leguminous plants are…….
Rhizobium

498. The tissue in man where no cell division occurs after birth is:
nerves

499. A symbolic association between a fungus and algae is:
Lichen

500. The insection stage of material parasite plasmodium that enters the human body:
sporozoite