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Biology > Viva > Flashcards

Viva Flashcards

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AP® Biology flashcards Biology 101 flashcards
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

A

Antrum

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
Q

Pedigree analysis

A

Analysis of several traits of generations of a family

26
Q

No. Of nuclei and no. Of cells in the embryo sac of female gametophytes

A

7 cells 8 nuclei

27
Q

Analogous organs

A

Differ in structure but perform common function

28
Q

Homologous organs

A

Same structure and anatomy but perform diff functions

29
Q

Examples for analogous organs

A

Tendrils of vitis and pea
Wings of bird and bat
Wings of insect and bird

30
Q

Examples of homologous organs

A

Scales leaves of onion and spines of opuntia
Paddles of whale and wings of bat
Forelimb of man and bat

Biology (2 decks)

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