(i) Give one example of.
(ii)wat is d ultimate source of energy in the biosphere
(iii)list 3 conservable of natural resources
(iv)state 2 ways by which water could be poluted
(v)define the folowin ecological terms.
(vi)name d protozoan dat causes malaria
(vii) name one plant in d class of bryophyta
(viii)what is imcomplete metamorphosis
(ix)state 2 functions of d mammalian skin
(x)list 4 excretory product inplant.
.(xi)list 4 instrument commonly used to measure d rate of transpiration in plant
(xii)state d dental formula of a dog
(xiii)what name is given to d largest artery in man
(xiv) name d type of germination in .
(xv)where does absorption of digested food take place in man
(1)a,identify specimen A,B and C without reason
(b) where is each specimen found
(c) state one economic importance of each specimen
(d) drawn and labbeled fully d dorsal view of specime B(6to8cm long)
(2) identify specime D, E and F without reason
(b)to wat classes of fruit does each of specimen E and F belong
(c)state one agent of disperser of each of specime D,E and F
(d)state two observable differences betwen d internal feature of sp E and F
(3)a identify specinme G,H.i and J without reason
(b)Name one habitant each of specimen G,H,i and J
(c) what type of skeletor is present in specimen I and J
(d) state one economic importantof specimen H
(4) a differentiate b/w monohybride and dihybride crop
(b)define d followin ecological term
(ii) tropic level
(c) aterrestrial envirönment aboes d followin organism,snake,green grass,toad and grasshoper
(i) cönstruct a simple food chain makin use of d animals above
(ii) what is d ecological implication of killin all available snake in d envirönment.
ANSWERS TO SECTION A
(1) i (a) fish
(iii) dangerous depletion of non-renewable resourses, renewable resourses being used up faster than they can be formed, pollution of environment.
(iv) crude oil and agriculture wastes
(v) a. community:- Is made up of all the populations of living organisms that exist together in a habitat .
b. Ecosystem:- Is a basic function unit of nature. it is made up of living environment.
(vi) plasmodium sp.
(viii) incomplete metamorphosis – Is the gradual growth and development during an insect life cycle.
(ix) Temperature control and sensitivity
(x) carbondioxide, oxygen, water, tannins.
(xii) dental formular of a dog
(xiii) oxygenated blood
(xiv)a. compea seed — epigeal germination b. maize grain —- hypogeal germination
(2) a. Specimen A-
C- SoldierTermite b.
In damp soil, mud and moist soil B- In dark corners, cupboards, dirty toilet C- In plants c.
Specimen A–It burrows the soil to make it easy from growth of roots.
B– Destroys books, clothes, and food.
C– Destructions of crops/ plants.
d. Draw a dorsal view of specimen B
A Specimen D- Bean Seed Specimen
E- Coconut Fruit Specimen F- Mango Fruit.
b] Class of Fruit
F- Drupe, c] Agent of dispersal,
D- Explosive mechanism
F- Animal. d]
SPECIMEN E=> i]Presence of Embryo,
ii]Absence of Seed.
i]Absence of Embryo,
ii]Presence of seed.
4]Specimen G- Spisogyra,
H- Garden Snail,
J- Tilapia fish