S/A + Diagrams

Question 1

1. What is the producer in this food web?
2. All primary consumers
3. which one is at top of the trophic leve?
4. longest food chain circle
5. besides abiotic components what component is missng from food web? give two eg. of this component and state importance of having this component in ES!

Answer 1

1. producer: green plant
2. primary consumer: mouse, rabbit, goat
3. top of trophic leve: kite , lion
4. circle
5. decomposers ( bacteria and fungi)

Question 2

1. GPP is larger/smaller than NPP?
2. on the same trophic level, give one reson to explain why there is a difference between GPP and NPP
3. on the other hand in each trophic level, the GPP is always less than the NPP that is provided bu the previous trophic level. for eg. the net production in producer is 8863 while the enegy gained in herbivors is only 3368. explain why this is so with 2 reasons

Answer 2

1. GPP IS ALWAYS LRGER THAN NPP
2. diff btw NPP AND GPP: energy is lost as heat (respiration)
3. energy is lost via 1) uneaten food eg: blood, bones &, 2)wastes eg: urine and faeces

Question 3

Answer 3

Question 4

bacteria

Answer 4

Question 5

brown algae

Answer 5

Question 6

nitella

Answer 6

Question 7

organisms

Answer 7

Question 8

amino acid diff tree

Answer 8

Question 9

Answer 9

Question 10

Name 3 key features shared by all plants

Answer 10

1. green chlorophyl pigment
2. growth related features
3. reproduction related features

Question 11

Answer 11

1. haveing GAMETOPHYTES and SPOROPHYTES which are both MULTICELLULAR
2. an ALTERNATION OF GENERATION gametophyte and sporophyte generations
3. reduction of GAMETOPHYTE of life cycle
4. protection of EMBRYO

Question 12

Answer 12

Question 13

Answer 13

Question 14

Answer 14

Question 15

Answer 15

1. gametes - mitosis- gametes
2. gametes-> zygote, depends on H2O to transfer gametes
3. zygote-> sporophyte
4. sporophye- meiosis-> spores (which are made in sporangia)
5. spore dispersed by wind, spore germinate-> new gametophyte

Question 16

Answer 16

Question 17

Answer 17

Question 18

Answer 18

1. CUTICLE: to cope with DESSICATION by having a WAXY, impermeable layer to prevent excessive loss of water. Also filter UV light.
2. STOMATA:to cope with DESSICATION by having a pair of GUARD CELLS that can close the pore to prevent excessibe loss of water. Also pores can open to allow CO2 gass to flow into teh plants
3. XYLEM: provide structural SUPPORT and to TRANSPORT water
4. PHLOEM: to TRANSPORT NUTRIENTS
5. ROOT: for ANCHORAGE, and to absorbe WATER and MINERALS
6. SEED: protect EMBRYO

Question 19

Answer 19

Question 20

Answer 20

Question 21

Answer 21

Question 22

STATE two features in fruit that facilitate seed dispersal by animals

Answer 22

tasty, fruity, juicy, fleshy, brightly coloured, scented

Question 23

Explain : “ seeds germinate best after passing through animals”

Answer 23

1. the animal may have travelled a long distance after digested the fruits ( with seeds)
2. the digestive juice may have removed the seed coat which is essential for germination.
3. seed may germinate next to the faeces which are exellent fertilisers.

Question 24

explain why the genetic composition of cells in tissue E is different from that in tissue F

Answer 24

1. TISSUE F= a fertilised product in which its genetic makeup is both from male and female
2. TISSUE E originates from female ovary ( no male genetic makeup)

Question 25

label type of ground tissue

Answer 25

collenchyma: thin primary wall with thickened corner

Question 26

label ground tissue

Answer 26

sclerenchyma: thickened cell wall with lignin

Question 27

label gropund tissu

Answer 27

parenchyma: thin walls

Question 28

Answer 28

Question 29

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Question 30

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Question 31

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Question 32

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Question 33

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Question 34

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Question 35

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Question 36

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Question 37

Answer 37