Viva Flashcards

(30 cards)

1
Q

Name the type of placentation
Pea
Hibiscus
Cucumber

A

Marginal
Axile
Parietal

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2
Q

Formula by which the percentage of germinated pollen grains is calculated

A

Percentage of germinated pollen grains= n/Nx100

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3
Q

Chemicals used to promote pollen germination

A

Boric acid+sucrose

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4
Q

Stain used to demonstrate pollen tube growth on stigma

A

Cotton blue

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5
Q

In which stage the chromosomes are arranged in equator

A

Metaphase

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6
Q

In which stage the daughter chromosomes are arranged at the opposite poles

A

Anaphase

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7
Q

In which phase nuclear membrane and nucleoli clearly visible

A

Interphase

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8
Q

Stain used for nuclear staining

A

Acetocarmine/Acetoorcein

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9
Q

What are seminiferous tubules

A

Basic units of testis in which sperms are produced

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10
Q

Cell that secretes testosterone

A

Leydig

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11
Q

What is graafian follicle

A

Mature mammalian ovarian follicle enclosing an ovum

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12
Q

Example for Y linked inheritance

A

Hypertrichosis

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13
Q

Symptoms of amoebiasis

A

Frequent, loose, mucous filled watery stool
Blood in motion (dysentery)

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14
Q

Symptoms of malaria

A

Profuse sweating
Head ache and muscular pain
Intermittent high fever with chills

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15
Q

Symptoms of ascariasis

A

Indigestion and loss of appetite
Anaemia and fatigue
Occasional vomiting

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16
Q

Symptoms of ringworm

A

Ring shaped fluid filled lesions on skin, between toes and on scalp
Itching in the region of infection

17
Q

Function of fillifoem apparatus

A

Guides the entry of pollen tubes into synergids

18
Q

Placentation

A

Arrangement of placenta in the ovary of a flower

19
Q

Sporopollenin

A

Most resistant organic material present in the exine of a pollen grain

20
Q

Spermatogenesis

A

Formation of sperms in the testis

21
Q

Fluid filled cavity in graafian follicle

22
Q

Oogenesis

A

Process of formation of egg in ovary

23
Q

Two ste for artificial hybridization

A

Emasculation
Bagging

24
Q

Significance of bagging

A

Prevents contamination of stigma by unwanted pollen grains

25
Pedigree analysis
Analysis of several traits of generations of a family
26
No. Of nuclei and no. Of cells in the embryo sac of female gametophytes
7 cells 8 nuclei
27
Analogous organs
Differ in structure but perform common function
28
Homologous organs
Same structure and anatomy but perform diff functions
29
Examples for analogous organs
Tendrils of vitis and pea Wings of bird and bat Wings of insect and bird
30
Examples of homologous organs
Scales leaves of onion and spines of opuntia Paddles of whale and wings of bat Forelimb of man and bat