Neco Gce 2022 Alternative Biology Practical Answers
NECO GCE 2022 BIOLOGY PRACTICAL ANSWERS / NECO GCE 2022 ALTERNATIVE TO PRACTICAL BIOLOGY QUESTIONS AND ANSWERS EXPO/ VERIFIED AND LEGIT NECO GCE 2022 BIOLOGY ANSWER.
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Neco Biology Objective & Essay Answers 2022 with questions 100% verified
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official questions and answers for senior secondary schools. NECO Biology Questions and Answers 2022 (%100 Sure, NECO Biology Questions and Answers 2022
NECO BIOLOGY OBJ & ESSAY QUESTIONS AND ANSWERS FOR 2022
Tuesday 26th July 2022
Paper III & II: Objective & Essay – Biology – 10:00am – 12:30pm
NOTE; You Are To Answer Only Three(3) Questions From Theory Pls Take Note; Because We Answered All.
(i) Setting up of national park and gardens to save wildlife in their natural environment.
(ii) Poaching i.e. uncontrolled and illegal killing of game should be prevented.
(iii) Avoiding the use of pesticides that may kill off many animals
(vi) Prohibiting deforestation and encouraging afforestation
Sexual reproduction involves the fusion of two gametes male and female gametes during fertilization to form a zygote which develops into a new organism. It involves organisms of the same species.
(i) biceps (flexor)
(ii) Triceps (extensor)
(i) When one touches a hot object, the sensory receptor in the skin receives the stimulus
(ii) An impulse is transmitted from the receptor to the spinal cord, via the dorsal root/sensory neurone
(iii) The intermediate neurone in the spinal cord passes on the impulse to the motor neurone
(iv) The motor neurone then sends the impulses to an effector organ (muscle) via the ventral root
(v) All the neurones are linked by synapses across which impulses are sent
(vi) The muscle upon receiving the impulse contracts causing the hand to be withdrawn from the hot object
(i) It provides water for photosynthesis
(ii) To get rid of excess water in the plant
(iii) It helps plants to continually draw water from the soil into their stem and leaves.
(i) Growing of cover crops like grasses, sweet potato which covers the surface of the soil
(ii) Contour ploughing: ploughing along the contours of a slope to reduce the speed of runoff water.
Metamorphosis can be defined as the change of form or structure in an organism after hatching or birth.
(i) Promotion of sperm production
(ii) Aids development of uterine wall
(iii) Stimulates growth of testis
(iv) Promote development of secondary sexual characters in male
(i) Production of bile
(iv) Source of vitamin
When a man spins around a tree several time, there is an increase in metabolism leading to use up of energy. This as a result leads to decrease in energy and in turn causes dizziness
=WIND POLLINATED FLOWERS=
(i) The flowers are not attractive
(ii) The pollen grains are not sticky
=INSECT POLLINATED FLOWERS=
(i) The flowers are attractive
(ii) The pollen grains are sticky
(ii) Basal placentation.
Light rays from an external object is refracted by the cornea, aqueous humour, the lens and the vitreous humour. The lens act as the fine adjustment bringing the rays to a focus on the retina. The image formed on the retina of human are inverted and diminished. The brain receives the stimulus via the optic nerves and then interprete it.
Fruits is a product of fertilization in flowering plants. When a grain of pollen tube for the sperm to journey down the style and fertilize the ovule. The fertilized ovules become seeds. Fertilization is the death of the flower, as the petals drop or wither at this point and the ovary starts to enlarge and ripen into what we known as fruit
(ii)red blood cells
(iii)white blood cells
(i)They are proteinous in nature
(ii) They speed up the rate of chemical reaction
(iii) They are organic catalyst
(iv) They are specific in function
Mendel’s first law also known as the law of segregation of genes states that during gamete formation, two alleles at a gene locus segregate from each other and each gamete has an equal probability of containing either allele
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