Crab

Question 1

Largest species, Japanese Spider Crab, has a leg span of ___ (from claw to claw).

Accepted Answer

12 feet

Question 2

___ tons of crabs are cooked alive each year.

Accepted Answer

1½ million

Question 3

Crabs which live in the group are very cooperative.

Accepted Answer

True

Question 4

Crabs are not very old creatures.

Accepted Answer

False

Question 5

Crabs have external skeleton called___.

Accepted Answer

"exoskeleton".

Question 6

They appeared on the Earth during Jurassic period___ years ago.

Accepted Answer

200 million

Question 7

Most crabs mate when the outer temperature and the temperature of water is___.

Accepted Answer

high

Question 8

Female has wide abdomen.

Accepted Answer

True

Question 9

Crab is___.

Accepted Answer

an invertebrate

Question 10

Average lifespan of the crab is between___ years.

Accepted Answer

3 and 4

Question 11

Pregnancy lasts one to two___.

Accepted Answer

weeks

Question 12

Their eyes see a lot less details than human eyes.

Accepted Answer

True

Question 13

There are over___ species of crabs.

Accepted Answer

4.500

Question 14

Male waves with its swimming paddles, as a part of the seduction ritual prior to mating.

Accepted Answer

True

Question 15

Crabs communicate via___.

Accepted Answer

sound

Question 16

Female deposits between___ eggs.

Accepted Answer

1.000 and 2.000

Question 17

They inhabit sandy areas with stones and rocks.

Accepted Answer

True

Question 18

It belongs to the___ family.

Accepted Answer

crustacean

Question 19

Crabs are___.

Accepted Answer

omnivores

Questions 19