Figure Based QuestionsGiven below is the diagrammatic haplontic life cycle of
Chlamydomonas.
Refer the given life cycle and answer the following
questions.
- (a) In the given cycle, what do phase I and phase II
represent respectively?
(b) Identify structures X, y and Z. Give the characteristic
features of X. - (a) Describe the processes P, Q and R.
(b) Identify the process S.
(c) What kind of life cycle does Chlamydomonas exhibit?
Justify your answer.
chApTer-4: ANIMAL kINGDOM
Multiple choice Questions- The kind of coelom represented in the diagram given below
is characteristic of
(a) roundworm (b) earthworm
(c) tapeworm (d) cockroach.- Choose the wrong statement.
(a) Teeth in Chondrichthyes are modified ctenoid scales.
(b) Air bladder in Osteichthyes regulates buoyancy.
(c) In amphibians, the tympanum represents the ear.
(d) long bones in birds are pneumatic.
3. Match the following list of animals with their level of
organisation and choose the correct sequence.
Column I Column II
A. Organ level (p) Pheretima
B. Cellular level (q) Fasciola
C. Tissue level (r) Spongilla
D. Organ system level (s) Obelia
(a) A - (s), B - (r), C - (p), D - (q)
(b) A - (s), B - (q), C - (r), D - (p)
(c) A - (q), B - (s), C - (r), D - (p)
(d) A - (q), B - (r), C - (s), D - (p)
4. Which of the following is a common feature of
mammals?
(a) They undergo moulting.
(b) They have seven cervical vertebrae.
(c) They are carnivores.
(d) They have ventral nerve cord.
5. In which one of the following, the genus name, its two
characters and its Phylum are not correctly matched,
whereas the remaining three are correct?
Genus name Characters Phylum
(a) Pila (i) Body segmented Mollusca
(ii) Mouth with radula
(b) Asterias (i) Spiny skinned Echinodermata
(ii) Water vascular
system
(c) Sycon (i) Pore bearing Porifera
(ii) Canal system^
(d) Periplaneta (i) Jointed appendages Arthropoda
(ii) Chitinous exoskeleton
6. Body cavity of Coelenterata is called
(a) haemocoel (b) spongocoel
(c) coelenteron (d) pseudocoelom.
7. The non-cellular layer present between pinacoderm and
choanoderm in body wall of poriferans is known as
(a) mesoderm (b) middle lamellae
(c) mesenchyme (d) none of these.
8. Which one of the following categories of animals, is correctly
described with no single exception in it?
(a) All reptiles possess scales, have a three chambered
heart and are cold blooded (poikilothermal).
(b) All bony fishes have four pairs of gills and an
operculum on each side.
(c) All sponges are marine and have collared cells.
(d) All mammals are viviparous and possess diaphragm
for breathing.
9. Chordates differ from nonchordates in having
(a) notochord
(b) dorsal hollow nerve cord
(c) pharyngeal gill slits
(d) all of these.