2018/2019 WAEC GCE Biology Expo Answer (Obj and Essay) | Free Expo Questions And Answers Jan/Feb
WAEC GCE 2018 Biology Expo Answer (Obj And Essay) Answer - Jan/Feb Free Expo
BIOLOGY OBJ:
1-10: BDBBACCAAA
11-20: ACAACCADAA
21-30: DBBDDDABBC
31-40: BABDDCBDCD
41-50: AB--------
(1ai)
GLUCOSE:
-Energy generation
-It helps in metabolism
(1aii)
OXYGEN:
-It helps to oxidize glucose
-it brings about cellular or tissue respiration
(1b)
(i) Aerobic
(ii) Anaerobic
(1c)
(i) Amoeba - Body surface
(ii) Tilapea - Gill
(iii) Adult toad - Lungs
(iv) Grasshopper - Tracheae
(1d)
DRAW THE DIAGRAM OF OPEN STOMA IN A LEAF AND LABEL[6cm - 8cm long]
(3ai)
Ecosystem is a system that includes all living organisms (biotic factors) in an area as well as its physical environment (abiotic factors) functioning together as a unit.
(3aii)
Abiotic environment are all physical and nonliving chemical factors, such as soil, water, and atmosphere, which influence living organisms.
(3bi)
-Temperature
-Salinity
-Flow.
(3bii)
-Altitude
-Humidity
-Temperature
(3c)
In a simple ecosystem that consists of rabbits and grass. The grass reproduces at a certain rate, and the rabbits randomly wander around the world eating the grass. If a rabbit stumbles across a patch of grass, they will eat it and gain energy. If a rabbit gains enough energy, they will reproduce. Conversely, if a rabbit wanders around too long without finding any grass to eat, they will die.
(3d) DRAW THE PYRAMID
(4a)
Mendel's 1st Law of inheritance
States that genes are responsible for the development of the individual and that they are independently transmitted from one generation to another without undergoing ant change
(4aii)
-In production of drugs
-In production of organisms that are resistance to diseases
-In idetification of paternity of a child
-In identification of human blood types
-In studying of human genotypes
(4aiii)
-Continuous inbreeding reduces productivity and fertility of the animals
-Inbreeding increases homozygosity
-Inbreeding to an ancestor increases the risk of inheriting any undesirable characteristics it carried.
4bi)
1. the process by which different kinds of living organism are believed to have developed from earlier forms during the history of the earth.
2. the gradual development of something.
3. the giving off of a gaseous product, or of heat.
4. a pattern of movements or manoeuvres.
5. the extraction of a root from a given quantity..
WAEC GCE 2018 Biology Expo Answer (Obj And Essay) Answer - Jan/Feb Free Expo
2018/2019 WAEC GCE Biology Expo Answer (Essay & Obj) Expo Dubs/Runz | Free Expo Questions And Answers Jan/Feb
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WAEC GCE 2018 Biology Expo Answer
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2018/2019 WAEC GCE Biology Expo Answer (Obj and Essay) | Free Expo Questions And Answers Jan/Feb
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2018/2019 WAEC GCE Biology Expo Answer (Obj and Essay) | Free Expo Questions And Answers Jan/Feb
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