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Neco 2017 Biology Theory And Obj Answers – May/June Expo
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Neco 2017 Biology Theory And Obj Answers – May/June Expo
Views: 9750
Posts: 3
Chidusky
Chidusky (m)
1500392741 ago

Biology OBJ:
1dadeaabcaa
11ecebbaadbc
21bbabcaadab
31baccaabeed
41dabcabcaae
51aeeabbebde

=========
BIOLOGY-THeory

INSTRUCTION: Answer Three(3) Questions Only.

(1a)
Homeostasis is the maintenance of a fairly constant internal environment despite the changes in the external environment. Eg Am Amoeba regulates the water content of its protoplasm inorder to keep it at a fairly constant level

(1aii)
(i)Auxins
(ii)cytokinin

(1aiii)
-Euglena is regarded as an animal-
(i)It feed on ready-made food
(ii)It does not have a cellulose cell wall but has a plasma membrane

-Euglena is regarded as an plant-
(i)It has a chloroplast
(ii)It can manufacture it's food

(1bi)
(i)Temperature
(ii)humility

(1bii)
CLICK HERE FOR THE IMAGE
============

2ai)
​Beak- is used to pick up food such as grains and fruits
(2aii)
Crop- the food is stored temporarily in the crop where it moistened and fermented
(2aiii)
Gizard- the grinding of the food takes place at the gizard with the aid of small stones
(2aiv)
Liver- helps in breaking down fat from food
(2bi)​
-Artery-
(i)Vessels which carry blood from the heart to various body parts
(ii)Arteries carry oxygenated blood from the heart except pulmonary artery
(iii)Arteries have thick elastic muscular walls
(iv)Valves are absent
-Vein-
(i)Vessels which carry blood from the various body parts to the heart
(ii)Veins carry deoxygenated blood from the various body parts except pulmonary vein
(iii)Veins have thin non elastic walls
(iv)Valves are present to prevent the backward flow of blood
(2bii)​
-Adenovirus
-Nephritis
-Amyloidosis
(2biii)​
(i)Providing leadership on matters critical to health and engaging in partnerships where joint action is needed;
(ii)Shaping the research agenda and stimulating the generation, translation and dissemination of valuable knowledge;
(iii)Setting norms and standards and promoting and monitoring their implementation;
(iv)Articulating ethical and evidence-based policy options;
(v)Providing technical support, catalysing change, and building sustainable institutional capacity.

=============
(3ai)
enzymes is a substance produced by a living organism that acts as a catalyst to bring about a specific biochemical reaction.

(3aii)
cyclosis is a regular cyclic movement of protoplasm within a cell. It is the circulation of cytoplasm or cell organelles, such as food vacuoles in some protozoans

(3aiii)
peristalsis is the involuntary constriction and relaxation of the muscles of the intestine or another canal, creating wavelike movements that push the contents of the canal forward.

(3bi)
(i)Yankari Game Reserve - Bauchi
(ii)Borgu Game Reserve - kano
(iii)Okwangwo Game Reserve - Cross River

(3bii)
I=incisors,
C=canines,
P = premolars
M = molars.
For adult man it is
I - 2/2
C - 1/1
P - 2/2
M - 3/3 = 16 x 2 = 32.

(3ci)
TABULATE:
i)The outer layer of the fruit is the exocarp, and the outer layer of the seed is the testa.
ii)Fruit contain high amounts of moisture while seed contain low amounts of moisture
iii)Fruit undergoes a ripening process while seed does not undergoes a ripening process
iv)after fertilization, the ovary convert into Fruit while after fertilization, the ovule convert into seed

(3cii)
i)The fluid allows the baby to move around while it is developing. This movement allows for bone and muscle development.
ii)The fluid also helps to keep the fetus nice and warm by keeping heat in. It also helps to keep the temperature consistent.
iii)The fluid offers protection from any blows that may come to the uterus area. It may cushion the blow if the mother falls.
================

(5ai)
Primary successionis the colonization of new sites by communities of organisms. It often occurs after a devastating event has wiped out the organisms that lived in the area, or with the creation of a new habitat.

(5aii)
primary root is the first root produced by a germinating seed, developing from the radicle of the embryo.

(5aiii)
macroNutrients are environmental substances used for energy, growth, and bodily functions by organisms. Depending on the nutrient, these substances are needed in small amounts or larger amounts.

(5bi)
(i)Airway diseases
(ii)Lung tissue diseases
(iii)Lung circulation diseases

(5bii)
(i)By Sterlization It destructs pathogens in medical and lab rooms.
(ii)By disinfectants but they are not suitable for human skin like phenyl
(iii)By antiseptic They can be used on human skin like iodine
(iv)By use of sanitizers We can use sanitizers like dettol to wash off pathogens from our hand

(5biii)
(i)It provides basis of evolution
(ii)It helps in maintaining life even in adverse conditions
(iii)It helps the organisms survive in changed climatic conditions.

(5c)
After the seed has made it to a new location and is covered with dirt, it can begin germination.Germinationis the process of seeds developing into new plants. First, environmental conditions must trigger the seed to grow. Usually, this is determined by how deep the seed is planted, water availability, and temperature. When water is plentiful, the seed fills with water in a process calledimbibition. The water activates special proteins, calledenzymes, that begin the process of seed growth. First the seed grows arootto access water underground. Next, theshoots, or growth above ground, begin to appear. The seed sends a shoot towards the surface, where it will growl eaves to harvest energy from the sun.
=======



Biology - Question



Answer any three questions only

(1a)
(i) Define homeostasis
(ii) State two hormones found in plants
(iii) give a reason why it is regarded as a plant.

(1B)
(i) list two factors that affect transpiration
(ii) Draw a labelled diagram ( 8 - 10cm long) Of the mammalian eye

(2a)
state the roles of the following in the digestion of food
(i) Beak
(ii) crop
(iii) Gizard
(iv) liver

(2bi)
in a tabular form give four difference between arteries and veins
(ii) list three diseases of the kidney
(iii) mention five functions of world health organisation ( WHO)

(3a) define the following terms
(i) Enzymes
(ii) Cyclosis
(iii) peristalsis

(bi) list three Game reserves in Nigeria state thr dental formula of man

(Ci) in a tabular form state four diffeence between fruit and seed
(ii) state three finctions of ammotic fluid.

(4a)
Define The following terms:
(1)Decomposers
(ii) Habitat
(iii) Mutation

(4b)(i) State three Reason for Conservation Of Natural Resources
(ii) List three types of Asexual Reproduction
(iii) Give five functions of blood to men
(iv) Mention Three different between asexual and sexual reproduction

(5a) Define the following terms
(I) Primary succession
(ii) primary root
(iii) Macronutrient
(b)(i) list three diseases of lungs
(ii) Give four ways of controllin pathogens
(iii) State three Advantages of variation
(c) describe the process of seed germination.
================================

highbee
highbee (m)
1500451004 ago
pls say you can't help us
livingtruth
livingtruth (m)
1500457963 ago
nice one people u are the best ever
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