Everyday Science MCQs — Test 143

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Question 1

In mouth cavity of many molluscs there is a rasping tongue like structure_________provided with many horny teeth.

Question 2

All insects have how many parts of legs?

Question 3

In all arthropods,the body is covered with a chittinous cuticle which is secreted by the____________?

Question 4

Sub- phylum vertebrate is also known as__________?

Question 5

The phylum chrordata comprise about how many species?

Question 6

It is stiff rod of special cells surrounded by connecive tissue present in the mid -dorsal region and appears in the embryos of all chordates

Question 7

They are considered to be the most primitive and are surely the first of the vertebrates?

Question 8

The nephridia of earthworm open into the coelom by_________?

Question 9

Nephrostome in earthworm opens in____________?

Question 10

Scolidon or dog fish belong to the group of fishes called__________?