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BIOLOGY OBJ:
1-10: DDACDACCDC
11-20: BDBCADBBCD
21-30: DDDAEACEAA
31-40: BABCDADCDE
41-50: DCDBEECCCC
51-60: ADBBDDDDAD
*Source Donizzy*
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BIOLOGY-ANSWERS-BY-DONIZZY
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2a)
DRAW THE DIAGRAM
2bi)
-They have two pairs of libs
-They have naked or moist and glandular skin with no external scales
-They carry out gaseous by gills,lungs,skin and mouth
-Reproduction is sexual
-They have poisonous gland for defence
-They have three chambered heart
2bii)
-Flowers are dull coloured
-Absence of scent
-Flower have small,incouspicious petals/sepals
-Pollen grain are small smooth light and not sticky
2biii)
-Possession of succullent stems by desect plant to enable them store excess water
-Possession of tiny and scanty leaves to reduce water loss through transpiration
-Possession of extensive root system for anchorage water absortion
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3ai)
Nutrition is defined as the intake of food that has all nutrients for growth and development
3aii)
mutation is the splitting of a cell into simpler ones which have the same characters and features of the bigger ones
3aiii) Gene are hereditary units or basic units of inheritance. They are located in chromosomes and are responsible for the transmission of character from parents to the offspring
3b)
The ray is reflected from the object into the pupil and iris.The rays travels through the cornea,lens,aqeous humour and vitreous humour and the image is formed on the retina.The image is then sent to the brain through the optic lobe of the brain
Conjuctiva->Cornea->Iris&pulpil->aqeous humour->lens->Vitreous humour->Retina->Brain
3c)
TABULATE
Amoeba:
-They have false foot
-They are parasitic
-They have singular nucleus
Euglena:
-They have flagella
-They are holozoic
-They have micro and mega nucleus
3cii)
-Proper sewage disposal
-Proper refuse disposal
-Control of disease
-Protection of food
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4ai)
-General weakness
-Headache
-Sore throat
-Muscle pain
-Diarrhea and nausea
4b)
TABULATE
Living thing:
-They can move
-They reproduce
-They grow
-They respond to stimulus
-They excrete
Non living:
-Most do not move
-They do not reproduce
-They do not grow
-They do not respond to stimulus
-They do not excrete
4c)
-Large cylindrical centrum
-Large neural canal
-Short tranverse process
-Long neural spine
4b)
DRAW THE DIAGRAM
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1a)
Morphological variation refers to the noticeable physical appearance of individual of the same species . for example in human beings morphological variation include, height of the body , shape of the body etc
ii)Pollination: The transfer of pollen from the anthers of a flower to the stigma of the same flower or of another flower.
iii)niche:is a term that is used in ecological biology to define an organism's
role in an ecosystem.
1bi)
i)Both processes release energy
ii)Both start with the breakdown of a nutrient (glucose)
iii)Both yield byproducts
1bii)
i)draught
ii)flood
iii)pests
iv)poor storage facilities
1ci)
(i) Pteridophyta
(ii) Anthophyta
(iii) Bryophyta
1cii)
(i) Embryo with two cotyledons
(ii) Flower parts in multiples of four or five
(iii) Roots develop from radicle
(iv) Pollen with three furrows or
pores
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