B4.1 Adaptation to enviornment Flashcards

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1
Q

habitat

A

place in which a community, species, population or organism lives, can be in turn to its geographical or physical location within its ecosystem

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2
Q

adaptations of organisms…

A

adapt based on abiotic environment of their habitat, they adapt to their biotic and abiotic actors within envionrment

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3
Q

biotic factors

A

living factors which have impact on feeding, predator- prey symbiotic, mutualistic or other forms of interdependent relationships eg. fungi, bacteria, plants, animals

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4
Q

abiotic factors

A

non living physical factors, have influence on specific adaptations of organism to live in their respective habitat eg.air, light, temperature, mineral, PH, humidity

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5
Q

describe abiotic factors of high habitat

A

UV radiation, low temp, water scarcity, frozen soil (permafrost), makes rooting and absorption of nutrients and water difficult

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6
Q

describe abiotic factors of dry habitat

A

water conservation challenge, tolerance of high salt concentration hinders water uptake via osmosis, sand retains little water and contains little organic matter ( normally helps store water)

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7
Q

describe abiotic factors of waterlogged habitat

A

mangrove swamps develop in tropic and subtropics where they grow in sheltered conditions and where mud accumulates, soil is waterlogged, anaerobic and with high salt conc (due to evaporation of water)

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8
Q

adaptation= white reflective and wooly hair; purpose of structure

A

intercept and de energise harmful UV radiation before reaches plant cell
limits water evaporation

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9
Q

adaptation= small leaves, stunted growth to stay low on ground; purpose of structure

A

help conserve energy and withstand challenging conditions eg. strong winds, also minimise water loss via transpiration, also help plants access soil at slightly warmer temperatures

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10
Q

adaptation= thick fleshy leaves (just like succulents); purpose of structure

A

reduce water loss, protect against harmful UV, hold moisture

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11
Q

1.thick waxy covering on leaves (cuticle),
2.leaves that can roll up during droughts,
3.stomata (pores in leafs) in indentations, reason for structure, in plants growing in sand dunes

A

1- reduces water loss through transpiration
2- rolled up leaves create a humid hamper and reduce exposure to wind (reducing transpiration)
3- stomata in indentations keep humid air with no exposure to wind

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12
Q

underground stems, reason for structure, in plants growing in sand dunes

A

provide stability, extend deep into ground to obtain water

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13
Q

accumulation of carbs in roots and leaf cell reason for structure, in plants growing in sand dunes

A

storage of sugars increase osmotic potential + helps to absorb water

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14
Q

pneumaticophores nd cable roots, reason for structure, in plants growing in waterlogged soil

A

pneumatophers are vertical roots which grow in the air +absorb oxygen
cable roots provide stability and often grow close to the ground to absorb oxygen

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15
Q

stilt roots growing in a downward arch from the stem reason for structure, in plants growing in waterlogged soil

A

anchor the trees into the ground and increase stability

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16
Q

buyount seeds reason for structure, in plants growing in waterlogged soil

A

can be carried away by ocean currents and allow dispersal to fertile soil

17
Q

salt glands in leaves reason for structure, in plants growing in waterlogged soil

A

excess salt removal due to increased salt water potential

18
Q
A