Download App

Structural Organisation in Animals — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYStructural Organisation in Animals2 Marks
Question
Distinguish between the followings:
Prostomium and peristomium.
✓

Answer

Prostomium
Peristomium
Prostomium is a small fleshy lobe, which overhangs the mouth of an earthworm. It helps the organism push into the soil and is sensory in function.
The first body segment in the earthworm is called the peristomium. It surrounds the mouth opening.

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 "2 Marks Questions" from Structural Organisation in Animals→Structural Organisation in Animals — all question types→BIOLOGY STD 11 Science question papers→Rajasthan Board STD 11 Science question papers→Rajasthan Board question paper generator→

Similar questions

Both unicellular and multicellular organisms undergo mitosis. What are the differences, if any, observed in the process between the two?
→
Which one belongs to Platyhelminthes?
  1. Schistosoma.
  2. Trypansoma.
  3. Plasmodium.
  4. Wuchereria.
→
Coelom derived from blastocoel is known as:
  1. Enterocoelom.
  2. Schizocoelom.
  3. Pseudocoelom.
  4. Haemocoelom.
→
Two chambered heart occurs in:
  1. Crocodiles
  2. Fish
  3. Aves
  4. Amphibians
→
Differentiate between cytotaxonomy and chemotaxonomy.
→
What are the four basic shapes of bacteria?
→
Why is Kreb's cycle also called TCA cycle? Write the first step of the reaction in this cycle.
→
Who wrote the book Systema Naturae?
  1. Lamarck.
  2. Darwin.
  3. Wallace.
  4. Linnaeus.
→
Mention the characteristics of the cells in the region of meristem in roots.
→
On the basis of which character it can be said that bats do not belong to Aves?
  1. Ability to fly.
  2. Presence of mammary glands.
  3. Both (a) and (b).
  4. None of the above.
→