Download App

Diversity in Living Organisms — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceDiversity in Living Organisms1 Mark
MCQ
Corals are:
  • A
    Poriferans attached to some solid support.
  • B
    Cnidarians, that are solitary living.
  • C
    Poriferans present at the sea bed.
  • ✓
    Cnidarians that live in colonies.
✓

Answer

Correct option: D.
Cnidarians that live in colonies.
Corals are marine invertebrates of phylum$-$Cnidaria. They live in compact colonies of many identical individual $'$polyps$’$. The group includes the important reef builders that inhabit tropical oceans and secrete calcium carbonate to form a hard skeleton. Although some corals can catch small fish and plankton, using stinging cells on their tentacles, like those in sea anemone and jellyfish but most corals obtain the majority of their energy and nutrients from photosynthetic unicellular algae that live within their tissue.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q. [1 M]" from Diversity in Living Organisms→Diversity in Living Organisms — all question types→Science STD 9 question papers→Gujarat Board STD 9 question papers→Gujarat Board question paper generator→

Similar questions

Which of the following statement is correct about the atom of and element?
→
Reverberation of sound is due to:
→
When a stone is dropped on the surface of still water, the waves produced on the surface of the water are:
→
Which of the following is / are air borne diseases?
→
A bus increases its speed from $36\ km/h$ to $72\ km/h$ in $10$ seconds. Its acceleration is:
→
Direction of motion of a body is given by:
→
Separating funnel is used to separate immiscible liquids based on their:
→
The method of growing different crops alternatively on same piece of land is called $.....:$
→
Particles of gaseous matter are $.............$?
→
An echo-sounder in a trawler (fishing boat) receives an echo from a shoal of fish $0.4\ s$ after it was sent. If the speed of sound in water is $1500\ m/s$, how deep is the shoal?
→