3434 MTMTBIOLOGY TODAYBIOLOGY TODAY || march ‘16march ‘16
- a scientist wants to study the viral effects on plants. Which
of the following part of the plant should be excluded?
(a) Phloem (b) Pith
(c) cortex (d) Shoot apex
- Kadiri-1, Kadiri-2 are the varieties of
(a) rice hybrids
(b) red gram hybrids
(c) sorghum hybrids
(d) groundnut hybrids.
- The best stage to produce haploid through anther culture is
(a) microspore mother cells
(b) microspores
(c) 2- celled pollen grains
(d) all of the above.
True or false
- Even though the plant is infected with a virus, the apical
and axillary meristems are free of virus.
- Proteins of cereals and millets are deficient in methionine
and cysteine.
- First successful pollen culture was done by m.S.
Swaminathan.
- India’s wheat yield revolution in 1960s was possible
primarily due to quantitative trait mutations.
- Triticale, the first man made crop as it is an artificial
allopolyploid derived by crossing wheat and rice.
- microbes like Spirulina can be grown on waste water, animal
manure and even sewage, to produce food for human
consumption.
- It is estimated that approximately 50 per cent of the world
livestock population is in India and china, but contribute
only 25 percent to world farm produce.
- hybrid between female ass and male horse is called mule.
- Silk worm ceases to eat and start spinning silk around its
body from outside to inside.
- Proteins serine and fibroin are present in silk fibres.
match The columns
- match column-I with column-II.
Column-I Column-II
a. Totipotency (i) breeding crops with
higher levels of nutrients
B. micropropagation (ii) plant grown from hybrid
protoplast
c. Somaclone (iii) producing a large
number of plants through
tissue culture
D. Somatic hybrid (iv) capacity to generate a
whole plant from an
explant
E. Biofortification (v) plants genetically
identical to the original
plant
- match column-I with column-II. (There can be more than
one match for items in column-I).
Column-I Column-II
a. rice varieties (i) Gir
B. milch breed (ii) Jaya
c. Bee enemies (iii) marwari
D. ScP (iv) Fusarium graminearum
E. Goat breeds (v) G. mellonella
(vi) Methylophilus
methylotrophus
(vii) Merops orientalis
(viii) ratna
(ix) Sahiwal
(x) malabari
Passage Based Questions
23.(A) complete the given passage with appropriate words or
phrases.
When breeding is between animals of the same breed
it is called (i) , while crosses between different breeds
are called (ii). Inbreeding refers to the mating of
more closely (iii) individuals within the same breed for
_(iv) generations. The breeding strategy is as follows –
superior males and superior females of the (v) breed are
identified and mated in (vi). The progeny obtained from
such matings are (vii) and superior males and females
among them are identified for (viii). a superior female,
in the case of cattle, is the cow or buffalo that produces
(ix) per lactation. On the other hand, a superior male
is the bull, which gives rise to (x) progeny as compared
to those of other males.
(B) read the given passage and correct the errors, wherever
present.
Outcrossing is the practice of mating animals of different
breeds having common ancestors up to 2-3 generations.
Offsprings of such mating are known as cross breeds.
It is the best breeding method for animals high in
productivity. a single cross often helps to overcome
breeding depression.
