Earlyface

tnks early face...i need biology answers

mr Jeffery...pls i need biology practical answers

2a)
i)arthropodia
ii) inserta
2b)
i) For Phyllum
– presence of jointed appenodafes
-presence of chitinumes
ii) for class
– presence of 3 pairs of walking legs
– presence of segmented body parts
2c)
i) Organism D is mal
ii) presence of airal style
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4ai)
i) foilage
ii) epicotyl
iii) tap root
iv) rootlets
v) split testa
vi) radicle
vii) cotyledon
4aii)
i) it is the primitive leaf wich which manufactures food for the seeding
ii) it functions as the primitive sterm of the seedling
v) it protects the inner part of the seed before germination
v) it absorbs natrients from the soil
vii) it provides food for the germination seed.
Vi) it grows to form the root of the seeding
4bi)
Epigeal germination
4bii)
– cowpea
– groundnut
– castor
4biii)
– the seed requires warmth, water, viable seeds for germinitaion
-the seed absorbs moisture and become swollen

AGRIC SCIENCE WAEC GCE

2a)The soil pH is a measure of
the acidity or alkalinity in
soils. pH is defined as the
negative logarithm (base 10)
of the activity of hydronium
ions (H+ or, more precisely,
H. 3O+
2b)
i. Inefficient Use Of Nitrogen.
ii. Increase in the concentration of
hydrogen ions in the soil
iii. removal of product from the farm or
paddock
iv. build up in organic matter
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(3ai) It is caused by fungi
(3aii) Rain and wind can spread disease,
as well as insects and irrigation water.
(3aiii) chlorosis of the onion leaves
occurs
3aiv)
(i)Bury or flail infected crop residues
after harvest to promote decomposition.
(ii)Avoid overhead water and over-
watering, especially in transplant
production.
(3b)
(i)They feed on natural fibers
(ii)They have a direct impact on
agricultural food production by chewing
the leaves of crop plants
(iii)They reduce crop yield
(iv)they reduce the quality of crops
(v)they cause retarded growth of crops
(3c)
(i)Select boars that are free from defects
(ii) grow faster than average
(iii)have less backfat than the average of
the breed
(iv) have eaten less feed than average to
reach a specific weight.
(3d)
(i)Good for maternal and rotational
crossbreeding
(ii)Docility and ease of management
(iii)Lower wintering cost
(iv)Early maturity and longevity
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5c)
Farm budgeting is a process of estimating
costs, returns and net profit of a farm or a
particular enterprise. Budget is a
statement
of estimated income and expenditure.
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(6a)
(i)he must be persuasive
(ii)he must be approachable
(iii)he must pass government policy to
the farmers
(iv)he must be knowledgeable
(6bi)
Advantages:
-the farmer receives more attention from
the agent.
-the farmer gets information faster
through the use of telephone
disadvantages:
-it waste a lot of time
-many farmers cannot e reached
(6bii)
advantages:
-it saves cost and time
-it is not as tedious as in personal contact
disadvantages:
-the unserious ones can discourage
others
-shortage of extension workers to reach
many groups
(6c)
these are laws promulgated by the
government in form of decrees, edicts
and bye laws to prevent people from
exploiting the forest at will, that is helps
to conserve or preserve trees.