BIOTIC FACTORS Flashcards
BIOTIC FACOTS
1) pollinators
2) decomposers
3) natural pest enemies
4) predators
5) parasitoids
6) pests
SYNGAMY
fertilization of female gamete through pollinators
EXAMPLES OF POLLINATORS
1) moths
2) bats
3) nees
4) ants
FLOWERS
attract pollinators
DECOMPOSERS
1) break down dead organisms into nutrients
2) component of nutrient cycle
=> bacteria
=> fungi
=> actinomycetes
LADYBIRD BEETLES
aphids
LACEWING AND HOVERFLY GRUBS
1) aphids
2) small caterpillars
COMMON GROUND BEETLES
1) aphids
2) leaf beetles
3) weevils
4) wireworms
5) fruit flies
WASP
1) aphids
2) caterpillars
PARASITOIDS
lay eggs in the body of living host to feed on
BRACONID WASP
1) caterpillars
2) weevils
3) woodboring beetles
SCOLIID WASP
1) green june
2) japanese beetle grub
TACHINID FLIES
caterpillars
EXAMPLES OF PESTS
1) insects
2) pathogens
3) weeds
4) vertebrate and invertebrate pests
‘ALLELON’
of each other
‘PATHOS’
to suffer
INFLUENCE OF ‘INHIBITORY’ CHEMICALS
1) inhibit shoot/root growth
2) inhibit nutrient intake
3) attack naturally occurring symbiotic relationship of plants
BLACK WALNUT AND CORN
cropping system reduce corn yield
LEUCAENA
1) reduce yield of turmeric and wheat
2) increase yield of maize and rice
LANTANA
reduce germination and growth of milkweed vine
EUCALYPTUS AND NEEM TREES
reduce wheat yield
MANGO
inhibits sprouting of purple nutsedge tubers
RYE AND WHEAT
suppress weeds
BROCCOLI
residue interferes growth of following cruciferous crop
IMPACT OF ALLELOPATHY
1) change pattern of vegetation
2) change in weed growth pattern
3) inhibition of growth
