Download App

MODEL PAPER 6 — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYMODEL PAPER 63 Marks
Question
Give general characters of Phylum Arthropoda.
✓

Answer

General characters of Phylum Arthropoda: (Arthropoda = "jointed foot"). It is the largest group of animals comprising of about 900,000 species. The animals of this phylum are found all over the world in all climates and conditions. Distinguishing characters:
i. The body is metamerically segmented.
ii. The body is jointed outwardly and bilaterally symmetrical.
iii. Typically each segment has a pair of jointed appendages.
iv. Coelomata and triploblastic.
v. A hard, non-living, exoskeleton is present. It is usually made up of chitin.
vi. Body divided into head, thorax and abdomen.

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 "3 Marks Question" from MODEL PAPER 6→MODEL PAPER 6 — all question types→BIOLOGY STD 11 Science question papers→Rajasthan Board STD 11 Science question papers→Rajasthan Board question paper generator→

Similar questions

Describe the modification of stem in:
  1. Chrysanthemum.
  2. Eichhornia.
  3. Jasmine.
→
Distinguish between the following:
Glycolysis and Fermentation
→
Analyse the events during every stage of cell cycle and notice how the following two parameters change.
Amount of DNA content (C) per cell.
→
Mention the similarities between the:
  1. Cardiac and skeletal muscles.
  2. Cardiac and smooth muscles.
→
Honeybees lead a highly socially organized life and thus are able to convert the nectar into sweet honey. Which of the following is similar to this statement? Which type of benefits those animals get which live a social life?
  1. If we learn to cooperate among ourselves then we can create immense value not only for us but also for others
  2. Teamwork is a dream-work
  3. All human beings are dependent on each other for their survival
→
What is resting membrane potential? Give the role of sodium-potassium pumps in maintaining it. How does resting potential change into action potential?
→
Name the two basic phases of cell cycle and differentiate between the two.
→
Explain heart sounds.
→
Eukaryotic cell have organelles which may
bound by a double membrane.
Group the various sub-cellular organelles into these categories.
→
The two kingdom classification system placed bacteria, algae, blue-green algae, fungi, mosses, ferns, gymnosperm, and angiosperms, together under one single kingdoms-Plantae. According to you, what could have been the basis of such classification.
→