Home WAEC NECO NABTEB
JAMB CBT JUPEB IJMB Other Exams Main Website
Want To Contact Us? Click Here

Quick Contact

Click To Send Us SMS Now
Click To Chat Examrelief On WhatsApp

Latest NABTEB on Giditrends

2020 NABTEB Biology Questions and Answers
NABTEB September 21, 2020 • 1 month ago • One Comment

WELCOME TO EXAMRELEIF 2020 NABTEB ANSWERS PAGE

KEEP REFRESHING THIS PAGE UNTIL THE QUESTIONS AND ANSWERS ARE FULLY UPLOADED

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

100% VERIFIED BIOLOGY THEORY QUESTIONS

Page 1. CLICK HERE
Page 2. CLICK HERE

👑 2020 NABTEB BIOLOGY ANSWERS👑

100% VERIFIED BIOLOGY OBJ ANSWERS

1-10: DACDBCCBCC
11-20: DBCCCBBACD
21-30: AACDDDBACC
31-40: DCCCDBCBAC
41-50: AACADCCDBB

100% VERIFIED BIOLOGY THEORY ANSWERS

YOU ARE TO ANSWER FOUR QUESTIONS IN ALL: ONE FROM EACH SECTION(PART)

PART I

(1ai)
DIAGRAM [CLICK HERE]

(1aii)
(i) Endoplasmic reticulum: it aids the transport of materials within the cytoplasm

(ii) Nucleous : it controls all the life activities of the cell. It store hereditary information as it contain DNA inside chromosomes which take part in cell division

(1b)
(i) Cells(First level): Cell is defined as the simplest, smallest and basic unit of living organisms. single cell organisms are called unicellular while organisms with many cells are called multicellular.Examples of unicellular organisms are Amoeba,chlamydomonas,Euglene etc. Example of multicellular organisms are volvox, Hydra,Spirogyra etc.

(ii) Tissue (Second level ): A tissue is a group of similar cells forming a layer in an organism which performs a particular function. Example of tissue in higher plants are mesophyll tissue and muscle. Example of tissue in higher animal are Bone and cartilages. Example of tissue which exist between level of organization of life are Hydra and Algae

(1ci)
Osmosis: Osmosis aim to equalize forces inside cells and organisms as a whole,spreading water,nutrients and necessary chemicals from areas that contain a high concentration to areas that contain a low concentration.

(1cii)
Diffusion: All cells are enclosed by a cell membrane,which is selectively permeable. molecules can move into or out of cells by diffusion and active transport
===============================

PART II

(2a)
Growth is defined as an irreversible or permanent increase in size,dry mass or weight due to the addition of living protoplasmic materials in organism.

(2aii)
(i)Light
(ii)Oxygen
(iii)Carbon(iv)oxide
(iv)Water
(v)Temperature

(2aiii)
(i)auxins
(ii)gibberellins
(iii)absisic acid

(2bi)
Germination is defined as the process which involves the gradual development of the embryo of the seed into a seedling or a young plant. It is also a series of changes by which an embryo in a seed grows into seedling.

(2bii)
TABULATE
– Hypogeal
(i)Energy obtained from food is stored in the endosperm
(ii)Foilage leaves are the first photosynthetic tissue
(iii)Hypocotyl covered by the sheat/coleorrhiza

– Epigeal
(i)Energy obtained from food is stored in the cotyledon
(ii)Cotyledon is the first photosynthetic tissue
(iii)Hypocotyl emerges uncovered

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

Part III

(5ai)
Metamorphosis can be defined as the series of gradual changes of formed and shape of an insect/organisms from the fertilized egg(immature stage) to adult (mature stage of adulthood).

(5aii)
(i)Complete metamorphosis
(ii)Incomplete metamorphosis

(5aiii)
Example of organisms that undergo Compete metamorphosis are
(i)Housefly
(ii)butterfly

Examples of organisms that undergo Incomplete metamorphosis
(i)cockroaches
(ii)Termite

(5bi)
(i)Termites
(ii)Honey bees
(iii)Ants
(iv)Wasps

(5bii)
(i)They live together in nests or colonies
(ii)They show or display division of labour
(iii)They show distinct castes
(iv)Members communicate with one another within the colonies

(5bii)
(i) Many insects pollinate followers of plant crops thus resulting in high food production

(ii)They transmit disease to crops and farmers thereby reducing their productivity

(iii)They render vegetables and fruit unattractive and unmarketable
==================================

PART IV

(6ai)
(i)Charles Darwin
(ii)Jean Baptist Lamarck
(iii)Hugo De Vries

(6aii)
(i)Evidence from embryology
(ii)Evidence from Vestigial organs
(iii)Evidence from domesticated organisms
(iv)Evidence from geographical distribution

(6b)
(i)They have opposable digit eg monkey
(ii)They possess grasping scale eg snakes
(iii)There is presence of prehensile tails eg monkey
(iv) They have grasping pads eg Frogs

(6c)
(i)It provide moisture necessary for microbial activity.
(ii)It is essential for translocation and transpiration.
(iii)It helps to maintain the body Temperature of organisms.
(iv)It is essential for plant turgidity/mechanical support.

=====COMPLETED =====

Don’t Just Copy Alone, Drop your Comments, Share with your friends on Facebook & Twitter Using the below share buttons.
BEST OF LUCK

Click Here To Comment
  1. Thanks sir good jobs God bless this site nice one

    Shut yoh Sep 23, 2020 • 11:00 AM •

Leave a Reply