Deck 2: Plant Reproduction and Seed Production

Question 1

Flowering in water melon is unaffected by light duration as it is:

A)Short day long night plant
B)Long day short night plant
C)Day neutral plant
D)None of the above

Answer 1

Long day short night plant

Question 2

Nature of pollination in cucurbits is:

A)Highly cross pollinated
B)Oftenly cross pollinated
C)Highly self pollinated
D)None of above

Answer 2

Highly cross pollinated

Question 3

Ginger is commonly cultivated as:

A)Annual
B)Biennial
C)Perennial
D)Biannaul

Answer 3

Annual

Question 4

Cross pollination is essential in following type of vegetables.

A)Monoecious
B)Dioecious
C)Gynoecious
D)Perigynous

Question 5

Cross pollination in plants bearing bisexual flowers is due to

A)Dichogamy
B)Herkogamy
C)Heterostyly
D)All of above

Question 6

In anemophilous plants, pollens are disseminated by means of:

A)Insects
B)Water
C)Wind
D)Gravity

Question 7

In pollen development Gametocides induces a problem of:

A)Sterility
B)Viability
C)Fertility
D)Mobility

Question 8

Production of seeds without fertilization is termed as:

A)Parthenocarpy
B)Parthenogenesis
C)Gametogenesis
D)All of above

Question 9

Most of the hybrid watermelon and cucumber are:

A)Triproid
B)Diploids
C)Aneuploids
D)Colchiploids

Question 10

Removal of off type plants from a seed field is termed as:

A)Weeding
B)Rouging
C)Hoeing
D)All of above

Question 11

The most important seed component affecting seed /viability during storage is:

A)Temperature
B)Humidity
C)Moisture
D)Food reserves

Question 12

Potato is generally propagated through

A)Seed potato
B)Potato seed
C)True Potato Seed
D)All of above

Question 13

Isolation during seed production is done by:

A)Types (Varieties)
B)Plantation at a distance
C)Zoning
D)All of above

Question 14

The most common pollinator insect in Pakistan is

A)Syrphid fly
B)Bumble bees
C)Honey bees
D)House fly

Question 15

Seed production in biennial vegetables is mostly done by:

A)Seed to seed method
B)In situ method
C)Replanting method
D)All of above

Question 16

Male sterily is not due to

A)Genetic factor
B)Genome factor
C)Cytogenetic factor
D)Nutritional factor

Question 17

Hybrid vigor in vegetables is manifested by

A)High yield
B)Uniformity in size
C)Uniformity in maturity
D)All of above

Question 18

Water melon for seed should be harvested when

A)Tendrils wither
B)Skin color is green
C)Skin color is pale yellow
D)Vine dry out

Question 19

In Pakistan, vegetables for seed production are harvested by:

A)Manual method
B)Machines
C)Combine harvestors
D)All of above

Question 20

During storage of vegetable seeds, seed moisture should be

A)Less than 10%
B)Equal to 10%
C)Greater than 10%
D)None of above

Question 21

The poorest seed storage capacity is in:

A)Okra
B)Peas
C)Cucurbits
D)Onion

Question 22

Nitrates are absorbed at pH below ___________:

A)5
B)6
C)7
D)8

Question 23

Hormones which control apical dominance are:

A)Auxins
B)Cytokinins
C)Gibberellins
D)Polyamines

Question 24

Tetraploid watermelon must be pollinated by ____ plants to produce a seedless watermelon

A)Triploid
B)Aneuploid
C)Diploid
D)Tetraploid

Question 25

Which vegetable cannot be grown as an off season vegetable:

A)Tomato
B)Potato
C)Chillies
D)Cucumber