BIOTIC FACTORS

Question 1

BIOTIC FACOTS

Answer 1

1) pollinators
2) decomposers
3) natural pest enemies
4) predators
5) parasitoids
6) pests

Question 2

SYNGAMY

Answer 2

fertilization of female gamete through pollinators

Question 3

EXAMPLES OF POLLINATORS

Answer 3

1) moths
2) bats
3) nees
4) ants

Question 4

FLOWERS

Answer 4

attract pollinators

Question 5

DECOMPOSERS

Answer 5

1) break down dead organisms into nutrients
2) component of nutrient cycle
=> bacteria
=> fungi
=> actinomycetes

Question 6

LADYBIRD BEETLES

Answer 6

aphids

Question 7

LACEWING AND HOVERFLY GRUBS

Answer 7

1) aphids
2) small caterpillars

Question 8

COMMON GROUND BEETLES

Answer 8

1) aphids
2) leaf beetles
3) weevils
4) wireworms
5) fruit flies

Question 9

WASP

Answer 9

1) aphids
2) caterpillars

Question 10

PARASITOIDS

Answer 10

lay eggs in the body of living host to feed on

Question 11

BRACONID WASP

Answer 11

1) caterpillars
2) weevils
3) woodboring beetles

Question 12

SCOLIID WASP

Answer 12

1) green june
2) japanese beetle grub

Question 13

TACHINID FLIES

Answer 13

caterpillars

Question 14

EXAMPLES OF PESTS

Answer 14

1) insects
2) pathogens
3) weeds
4) vertebrate and invertebrate pests

Question 15

‘ALLELON’

Answer 15

of each other

Question 16

‘PATHOS’

Answer 16

to suffer

Question 17

INFLUENCE OF ‘INHIBITORY’ CHEMICALS

Answer 17

1) inhibit shoot/root growth
2) inhibit nutrient intake
3) attack naturally occurring symbiotic relationship of plants

Question 18

BLACK WALNUT AND CORN

Answer 18

cropping system reduce corn yield

Question 19

LEUCAENA

Answer 19

1) reduce yield of turmeric and wheat
2) increase yield of maize and rice

Question 20

LANTANA

Answer 20

reduce germination and growth of milkweed vine

Question 21

EUCALYPTUS AND NEEM TREES

Answer 21

reduce wheat yield

Question 22

MANGO

Answer 22

inhibits sprouting of purple nutsedge tubers

Question 23

RYE AND WHEAT

Answer 23

suppress weeds

Question 24

BROCCOLI

Answer 24

residue interferes growth of following cruciferous crop

Question 25

IMPACT OF ALLELOPATHY

Answer 25

1) change pattern of vegetation
2) change in weed growth pattern
3) inhibition of growth