BIOLOGY 2017 QUESTIONS AND ANSWERS NOW READY

Subscribers will get it before the exam
U all know we are the best,won't talk much
To subscribe, call/WhatsApp-08163139724

Subscribers will get in full
It will be posted half here,,and very late


____________________________________________________________________

🔱🔱🔱🔱🔱⚜🔱⚜🔱⚜🔱⚜🔱🔱⚜🔱⚜

*WAEC Biology Scheme and Sample Questions.*

_There will be three papers:_

_Papers 1, 2 and 3, all of which must be taken. Papers 1 and 2 will be a composite paper to be taken at one sitting._

_PAPER 1: Will consist of fifty multiple-choice objective questions drawn from Section A of the syllabus (the section of the syllabus which is common to all countries). It will carry 50 marks and last for 50 minutes._

_PAPER 2: Will consist of six essay questions drawn from the entire syllabus._

_The paper will be put into three sections, Sections A, B and C._

_Section A: Will consist of four questions drawn from Section A of the syllabus._

_Section B: Will be for candidates in Ghana only and will be drawn from Section B of the syllabus (ie the section of the syllabus perculiar to Ghana)._

_It will consist of short-structured questions. Section C: Will be for candidates in Nigeria, Sierra Leone, The Gambia and_

_Liberia and will be drawn from Section C of the syllabus (ie the section of the syllabus containing material for those countries only). It will also consist of short-structured questions._

_Candidates will be expected to answer two questions from Section A and all the short-structured questions from either Section B or

 _Section C. Each question in Section A will carry 20 marks while the compulsory short-term structured questions in Sections B and C will carry 30 marks. The total score will be 70 marks. The paper shall take 1 hour 40 minutes._

_PAPER 3: Will be a practical test (for school candidates) or a test of practical work (for private candidates) lasting 2 hours and consisting of three sections: Sections A, B and C._

_Section A: This will consist of two compulsory questions drawn from Section A of the syllabus, each carrying 25 marks._

_Section B: This will be for candidates in Ghana only. It will consist of one question drawn from Section B of the syllabus and will carry 30 marks._

_Section C: This will be for candidates in Nigeria, Sierra Leone, The Gambia and Liberia. It will consist of one question drawn from Section C of the syllabus and will carry 30 marks._

_Candidates will be expected to answer all the questions in Section A and one question in either Section B or C. The paper will carry a total score of 80 marks._

*BIOLOGY ANSWERS*

*WAEC 💯 VERIFIED BIOLOGY ANSWERS* 💯💯💯💯✅✅✅✅

*BIOLOGY ANSWERS*

====

1ai) Classifications of living things consists of placing together in categories those living things that resembles each other. It involves placing living things into groups that have certain features in common which distinguish them from other groups

1aii) Car von Linnè Also known as Carolus Linnaeus

1aiii)-Classification is important because it allows scientists to identify the organisms

-Classification is important because it makes it easy for scientists to group the organisms.

- It is also good to properly name organisms via a standardized system

1aiv)-Kingdom

- Phylum(Animal) or division (Plant) 

-Class

-Order 

-Family

-Genus 

-Species

1bi) -Vírus can reproduce when present in another living cell

-It possesses characteristics which can be transmitted from one generation to the next

1bii) -When a virus is extracted from a living cell and placed in a non living medium, it assumes a crystalline form and thus become non-living

-Virus cannot respire, excrete  or respond to stimuli

1ci) -Rosette disease

- Cassava mosaic disease

1cii) -Chicken Pox 

-Polio

======================

2a)i They catalyse reactions by lowering the activation energy of a reaction

ii). They are regenerated after each reaction

iii). They are substrate specific, hence only molecules which are complementary to their shape can bind to it.

iii). They aid in metabolism (anabolism and catabolism)

2bi)-Pancreatic lipase

- Amylase

2bii)-Fats and oil

-Starch Maltose

2biii) -It converts fat and oils to fatty acids and glycerol 

-It converts starch to maltose

2ci)Chlorophyll is necessary to absorb the radiant energy of the sun to synthesize sugar during photosynthesis

2cii)-Magnessium 

-Iron 

2ciii) Magnessium --->Yellowing of leaves and poor growth

-Iron--->Yellowing of leaves and poor growth

2d) *STEPS TO TEST PRESENCE OF STARCH IN THE LEAF*

1. Boil pieces of leaves in a beaker of water TO KILL THE CELLS AND BREAK THE WALL OF LEAF CELL

Fresh leaves

Boiling the leaves

2. Heat the pieces of leaf in alcohol for few minutes TO REMOVE CHLOROPHYLL

Alcohol turns to green color- chlorophyll is removed

3. Soak the pieces of leaf in hot water for a little while TO SOFTEN THE LEAF

4. Using a dropper, add a few drops of iodine solution onto the pieces of leaf TO TEST FOR STARCH

Finally, LEAVES THAT CONTAINS STARCH TURN TO DARK BLUE COLOUR

6a)

The odorous molecules come into contact with the olfactory epithelium at the top of the nasal cavity and stimulate multiple chemically cell receptors and thus the odour is transmitted to the brain. There after the brain interprets the type of smell.

6b)

i)Shell

ii)Membranes

iii)Airspace

iv)Albumen

v)Yolk

vi)Chalaza

6ci)

autotrophs are organisms that can synthesizes food from inorganic substances by using chemical energy or light

6cii)

i)Bacteria

ii)Unicellular algae

6d)

i)providing leadership on matters critical to health

ii)shaping the research agenda and stimulating the generation

iii)translation and dissemination of valuable knowledge

iv)setting norms and standards

v)promoting and monitoring their implementation

6e)

i)plants: Water Wisteria and Java Moss.

ii)Animals: catfish and earthworm

================

6f) Tabulate
Skin of mamma:
-Epidemis is multi-layered
-Waterproof
-Opeque
Epidemis of leaf:
-Epidemis is single layered
-Forous water can seep through
-Transparent
6gi) Plot A: Intra-species or intra-specific competition
ii) Plot B: Inter-species or inter-specific competition
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= -=-=-=-=-=-=