All the events from deposition of pollen grain on the stigma to the entry of pollen tube in the ovule are referred to as
Anonymous Quiz
7%
fertilization
2%
conjugation
89%
pollen- pistil interaction
2%
syngamy
The uterus opens into vagina through
Anonymous Quiz
91%
Cervix
4%
Infundibulum
3%
Ampulla
1%
Oviduct
Which of the following layers of the uterine wall exhibits strong contractions during parturition
Anonymous Quiz
3%
Perimetrium
78%
Myometrium
18%
Endometrium
1%
None of these
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Which of the following forms the birth canal?
Anonymous Quiz
89%
cervical canal and vagina
4%
cervix and ampulla
5%
fallopian tube and cervical canal
2%
oviduct and vagina
Several mammary ducts join to form a wider structure called
Anonymous Quiz
16%
lactiferous duct
8%
mammary lobe
67%
mammary ampulla
8%
mammary tubules
In which of the following cells first meiotic division is observed?
Anonymous Quiz
16%
Spermatogonia
70%
Primary spermatocytes
12%
Secondary spermatocytes
2%
Spermatids
Identify the structure that undergoes 2nd meiotic division during the process of spermatogenesis.
Anonymous Quiz
77%
Secondary spermatocyte
10%
Spermatids
10%
Primary spermatocyte
3%
Spermatozoa
The number of moles of hydrogen molecules required to produce 20-mole ammonia through
Haber’s Process is
Haber’s Process is
Anonymous Quiz
11%
10
15%
20
68%
30
6%
40
The law of multiple proportion was proposed by
Anonymous Quiz
27%
Lavoisier
36%
Dalton
24%
Proust
13%
Gay-Lussac
The ratio of masses of oxygen and nitrogen in a particular gaseous mixture is 1: 4. The ratio of
the number of their molecule is
the number of their molecule is
Anonymous Quiz
23%
1:4
16%
1:8
56%
7:32
5%
3:16
A compound possesses 8% sulphur by mass. The least molecular mass is
Anonymous Quiz
12%
200
67%
400
16%
155
6%
355
One mole of potassium dichromate completely oxidises the following number of mole ferrous
sulfate in acidic medium
sulfate in acidic medium
Anonymous Quiz
9%
1
40%
2
20%
4
31%
6
10 g of hydrogen and 64 g of oxygen were filled in a steel vessel and exploded. Amount of
water produced in this reaction will be
water produced in this reaction will be
Anonymous Quiz
24%
2 mol
20%
3 mol
50%
4 mol
6%
1 mol
The first filial generation of the cross between pure tall (TT) and dwarf (tt) pea plants showed
Anonymous Quiz
6%
2 Dwarf 2 Tall
7%
1 Dwarf: 3 Tall
33%
3 Tall: 1 Dwarf
54%
All tall pea plants
In a cross between homozygous recessive and a heterozygous dominant, the phenotypic and genotypic ratios
respectively are
respectively are
Anonymous Quiz
59%
1:1 and 1:1
21%
3:1 and 1 1
18%
all are dominant phenotype and all are dominant heterozygous genotypes
2%
all are recessive phenotypes and all are recessive genotypes
The F2 generation of the cross between F1 individuals of pure tall and dwarf pea plants showed
Anonymous Quiz
11%
1/4th tall and 3/4th dwarf pea plants.
67%
3/4th tall and 1/4th dwarf pea plants.
19%
All tall pea plants.
3%
All dwarf pea plants.
The genotypic ratio of Mendel's monohybrid cross is
Anonymous Quiz
2%
2:2
11%
1:1:1:1
21%
3:1
66%
1:2:1
How many types of gametes would be produced by homozygous parents differing in single pair of contrasting character?
Anonymous Quiz
37%
1
49%
2
6%
3
9%
4