sOLUTIONs
CHAPTER-1 : THE lIvING wORlD
- (c) 2. (d) 3. (b) 4. (b) 5. (a)
- (a) 7. (b) 8. (c) 9. (a) 10. (b)
- (c) 12. (a) 13 (b) 14. (b) 15. (b)
- True 17. True
- False : The word ‘species’ was introduced or defined by
John Ray. - True
- True 21. True 22. True
- True
- False : Natural History Museum is located in london.
- True
- A-(v), B-(i), C-(ii), D-(iii), E-(iv)
- A-(i, v), B-(ii, vi), C-(iii,vii), D-(iv, viii), E-(ix, x)
28.(A) (i) irreversible (ii) cell division
(iii) exclusive (iv) intussusception
(v) anabolism (vi) catabolism
(vii) Negative growth
(B) According to the rules of binomial nomenclature each
organism is given two names one name consisting of the
two words, generic and specific. Two species belonging to
same genus can cannot have similar specific names. The
specific generic name is written first followed by generic
specific name.
Generic name begins with a small capital letter whereas
specific name begins with a capital small letter.
Scientific names are derived from Spanish latin
language.
- (c) 30. (a) 31. (a) 32. (b) 33. (a)
- (c) 35. (d) 36. (d) 37. (b) 38. (b)
- (a) A – Muscidae
B – Solanales
C – Monocotyledonae
D – Felis catus
(b) Convolvulaceae
(c) Stomoxys (stable fly)
- (a) A – A store house of collected plant specimens that
are dried, pressed and preserved on sheets.
B – Collection and maintenance of living plants for
reference.
C – Enclosed areas where animals are kept in open
enclosures instead of cages.
D – A place used for storage, preservation and
exhibition of objects of natural history, art and
antiquities.
E – A dichotomic table of alternate characters known
as couplet each character of couplet is called as
lead.
(b) (i) 41×29
(ii) Moscow
(iii) ex-situ
(iv) Andman and Nicobar Islands
(v) indented
(vi) bracketed
CHAPTER-2 : BIOlOGICAl ClASSIFICATION- (b) 2. (c) 3. (d) 4. (b) 5. (c)
- (b) 7. (d) 8. (d) 9. (c) 10. (d)
- (c) 12. (a) 13. (a) 14. (b) 15. (b)
- True 17. True
- False : The viral genome gets integrated with host DNA in
lysogenic phase of reproductive cycle of virulent phages. - True 20. True
- False : Zygote is the only diploid structure in the organisms
having life cycle with zygotic meiosis. - True 23. True 24. True
- False : Deuteromycetes are called imperfect fungi because
they lack sexual reproduction. - A-(iv), B-(i), C-(ii), D-(v), E-(iii)
- A-(i, viii), B-(vi, ix), C-(ii, v), D-(iii, iv), E-(vii, x)
28.(A) (i) terrestrial (ii) chlorophyll
(iii) autotrophic (iv) cellulose
(v) starch (vi) oil globules
(vii) Motile
(B) Sclerotia and rhizomorphs are the means of sexual
vegetative reproduction in fungi. Rhizomorphs Sclerotia
are perennating bodies made up of compact masses
of hyphae whereas sclerotia rhizomorphs are rope like
twisted subterranean masses of hyphae. Vegetative Asexual
reproduction in fungi occurs through spores. The sexually
produced spores are called mitospores, meiospores e.g.,
basidiospores, conidia ascospores , etc. Asexually produced
spores are called meiospores mitospores, e.g., ascospores
oidia, chlamydospores etc. - (b) 30. (c) 31. (b) 32. (a) 33. (d)
- (b) 35. (b) 36. (d) 37. (a) 38. (c)
- (a) : A – Zoospores
B – Sporangiospores
C – Chlamydospores
D – Ascospores
E – Basidiospores
(b) (i) Zoospores (A) are motile spores that occur is some
Phycomycetes, e.g. Phytophthora and Albugo. They
bear 1-2 flagella anteriorly, posteriorly or laterally.
(ii) Basidiospores (E) are nonmotile meiospores which
are formed exogenously on short outgrowth of club-
shaped structure called basidium.