Q-1. What are the difficulties that you would face in classification of animals if common fundamental features are not taken into account?
i) The picture of animals at a glance will not be projected.
ii) The development of other animal species will not be made.
iii) The inter-relationship among animals will not to traceable.
Q-2) If you are given a specimen, what are the ships that you would follow to classify it?
1) Steps are :- a) levels or gradation
b) Patterns in organization.
iv) Diploblastic triploblastic
v) Body cavity or Coolum
Q-3. How useful in the study of the nature of body cavity & coelom in the classification of animals?
The body cavity which is derived & bind by mesoderm is called coelom & the animals are called coelomatus eg= molecules
ii) When there is the mesoderm is lived as poach like is called pseudocoelom & the animals called pseudocoelomatus e.g. = Aschihelmenthis
iii) When there is absence of mesoderm, it is called acoelomates.
E.g. = poriferas.
4) Distinguish between intracellular & intracellular digestion
Intra – cellular
i) Digestion takes place within the cell
ii) It is comparatively less efficient.
iii) few enzymes are associated with the digestion
e.g. = Amoeba
Extra – Cellular
I) Digestion takes place outside the cell & the alimentary canal
ii) this digestion is comparatively more efficient
iii) Large no of digestive glance & enzymes are associated with this digestion.
E.g. = Man.
b) Differentiate between direct & indirect development.
I) Here young ones resemble the adults in all respects
ii) Then is no intermediate stage
iii) e.g. Hydro, man
I) Here the young’s one do not recourses the adults.
2) The young ones usually pass through one or more intermediate stages before consisting the shape of doer.
E.g. = silk moth.
6) What are peculiar features that you find in parasitic platyhelmenthis?
Thick tegument (60 dye covering)
Adhesive organs like suckers & hook
Mostly anaerobic respiration
Cool of locomotors organs.
7) What are the reasons that you can think of for the arthropods to constitute the largest group of the animal kingdoms?
Tough cuticle body
Nervous systems are better developed.
Sense organs are well developed.
8) Water vascular system is the characteristic of which group of the following
a) Porifera b) tenophora
c) Echinodermata d) chordate
9) All vertebrates’ are chordates but all chordates are not vertebrata”
10) How important is the presence of air bladder in fish?
I) Air bladder regulates buoyancy to float in water.
ii) Animals of class chondricthyes do not have air bladder & in the absence of air bladder, the animals have to swim continuously to prevent sinking.
11) What are the modifications that are observed in bird mat keep them fly?
Urinary bladder is absent
Presence of one ovary.
Body is streamlined
12) Could the no of eggs or young ones produced by an oviparous & viviparous mother be equal?
It is not possible as in oviparous animals; eggs are laid outside the body of female. Some egg may not get the favorable condition & hatching may degenerate. Go complete for such losses, many eggs are laid.
In viviparous animals the development of embryo occurs inside the another
only one or few young ones could be supported
13) Segmentation in the body is first observed in which of the following?
a) Platy helminthes
b) Asch helminthes
An – Annelids
14) Match the following
d) comes plates
h) Gill slits
vi) Cyclostomes & Chondricthis
a) = (viii
b) = (v)
c) = (iv)
d) = (i)
e) = (ii)
f)) = (viii)
g) = (iii)
h) = (vi)