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Biology Past Questions and Answers
Topic: Leaf
Classroom
Jamb
Exam year:
Exam year
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
Question type:
Question type
Objective
Theory
Topics:
Topics
[1] VARIETY OF ORGANISMS
[1].1 Living organisms
[1].1.1 Characteristics of Living organisms
[1].1.2 Cell structure and functions of cell Components
[1].1.3 Level of organization
[1].1.3.1 Cell
[1].1.3.2 Tissue
[1].1.3.3 Organ
[1].1.3.4 Systems
[1].1.3.5 Organisms
[1].2 Evolution among the following
[1].2.1 Monera
[1].2.2 Protista
[1].2.3 Fungi
[1].2.4 Plantae
[1].2.4.1 Thallophyta
[1].2.4.2 Bryophyta
[1].2.4.3 Pteridophyta
[1].2.4.4 Spermatophyta
[1].2.4.4.1 Gymnosperms
[1].2.4.4.2 Angiosperms
[1].2.5 Animalia
[1].2.5.1 Invertebrates
[1].2.5.1.1 Coelenterate
[1].2.5.1.2 Platyhelminthes flatworms
[1].2.5.1.3 Nematoda
[1].2.5.1.4 Annelida
[1].2.5.1.5 Arthropoda
[1].2.5.1.6 Mollusca
[1].2.5.2 Multicellular animals
[1].2.5.2.1 Pisces
[1].2.5.2.2 Amphibia
[1].2.5.2.3 Reptilia
[1].2.5.2.4 Aves
[1].2.5.2.5 Mammalia
[1].3 Variety of Organisms
[1].3.1 Structural/functional and behavioural adaptations of organisms
[1].3.1.1 Adaptive colouration and its functions
[1].3.1.2 Behavioural adaptations in social animals
[1].3.1.3 Structural adaptations in organisms
[2] FORM AND FUNCTIONS
[2].1 Internal structure of a flowering plant
[2].1.1 Root
[2].1.2 Stem
[2].1.3 Leaf
[2].2 Internal structure of a mammal
[2].3 Nutrition
[2].3.1 Modes of nutrition
[2].3.1.1 Autotrophic
[2].3.1.2 Heterotrophic
[2].3.2 Types of Nutrition
[2].3.3 Plant nutrition
[2].3.3.1 Photosynthesis
[2].3.3.2 Mineral requirements
[2].3.3.3 Chemosynthesis
[2].3.4 Animal nutrition
[2].3.4.1 Classes of food substances
[2].3.4.2 Food tests
[2].3.4.3 The mammalian tooth
[2].3.4.4 Mammalian alimentary canal
[2].3.4.5 Nutrition process
[2].4 Transport
[2].4.1 Need for transportation
[2].4.2 Materials for transportation
[2].4.3 Channels for transportation
[2].4.3.1 Mammalian circulatory system
[2].4.3.2 Plant vascular system
[2].4.4 Media and processes of mechanism for transportation
[2].5 Respiration
[2].5.1 Respiratory organs and surfaces
[2].5.2 The mechanism of gaseous exchange in plants
[2].5.3 The mechanism of gaseous exchange in mammals
[2].5.4 Aerobic respiration
[2].5.5 Anaerobic respiration
[2].6 Excretion
[2].6.1 Types of excretory structures
[2].6.1.1 Contractile vacuole
[2].6.1.2 Flame cell
[2].6.1.3 Nephridium
[2].6.1.4 Malpighian tubule
[2].6.1.5 Kidney
[2].6.1.6 Stoma and lenticel
[2].6.2 Excretory mechanisms
[2].6.2.1 Kidneys
[2].6.2.2 Lungs
[2].6.2.3 Skin
[2].6.3 Excretory products of plants
[2].7 Support and movement
[2].7.1 Tropic, tactic, nastic, and sleep movements in plants
[2].7.2 Supporting tissues in animals
[2].7.3 Types and functions of the skeleton
[2].7.3.1 Exoskeleton
[2].7.3.2 Endoskeleton
[2].7.3.3 Functions of the skeleton in animals
[2].8 Reproduction
[2].8.1 Asexual reproduction
[2].8.1.1 Fission as in Paramecium
[2].8.1.2 Budding as in yeast
[2].8.1.3 Natural vegetative propagation
[2].8.1.4 Artificial vegetative propagation
[2].8.2 Sexual reproduction in flowering plants
[2].8.2.1 Floral parts and their functions
[2].8.2.2 Pollination and fertilization
[2].8.2.3 Products of sexual reproduction
[2].8.3 Reproduction in mammals
[2].8.3.1 Structures and functions of the male reproductive organs
[2].8.3.2 Structures and functions of the female reproductive organs
[2].8.3.3 Fertilization and development
[2].9 Growth
[2].9.1 Meaning of growth
[2].9.2 Germination of seeds and condition necessary for germination of seeds
[2].10 Co-ordination and control
[2].10.1 Nervous co-ordination
[2].10.1.1 The components, structure, and functions of the central nervous system
[2].10.1.2 The components and functions of the peripheral nervous systems
[2].10.1.3 Mechanism of transmission of impulses
[2].10.1.4 Reflex action
[2].10.2 The sense organs
[2].10.2.1 skin (tactile)
[2].10.2.2 Nose (olfactory)
[2].10.2.3 Tongue (taste)
[2].10.2.4 Eye (sight)
[2].10.2.5 Ear (auditory)
[2].10.3 Hormonal control
[2].10.3.1 Animal hormonal system
[2].10.3.1.1 Pituitary
[2].10.3.1.2 Thyroid
[2].10.3.1.3 Parathyroid
[2].10.3.1.4 Adrenal gland
[2].10.3.1.5 Pancreas
[2].10.3.1.6 Gonads
[2].10.3.2 Plant hormones (phytohormones)
[2].10.4 Homeostasis
[2].10.4.1 Body temperature regulation
[2].10.4.2 Salt and water regulation
[3] ECOLOGY
[3].1 Factors affecting the distribution of Organisms
[3].1.1 Abiotic
[3].1.2 Biotic
[3].2 Symbiotic interactions of plants and animals
[3].2.1 Energy flow in the ecosystem
[3].2.1.1 Food chains
[3].2.1.2 Food webs
[3].2.1.3 Trophic levels
[3].2.2 Nutrient cycling in nature
[3].2.2.1 Carbon cycle
[3].2.2.2 Water cycle
[3].2.2.3 Nitrogen cycle
[3].3 Natural Habitats
[3].3.1 Aquatic
[3].3.2 Terrestrial/arboreal
[3].4 Local (Nigerian) Biomes
[3].4.1 Tropical rainforest
[3].4.2 Guinea savanna
[3].4.3 Sudan Savanna
[3].4.4 Desert
[3].4.5 Highlands of montane forests and grasslands of the Obudu, Jos, Mambilla Plateau
[3].5 The Ecology of Populations
[3].5.1 Population density and overcrowding
[3].5.2 Adaptation for survival
[3].5.2.1 Factors that bring about competition
[3].5.2.2 Intra and inter-specific competition
[3].5.2.3 Relationship between competition and succession
[3].5.3 Factors affecting population sizes
[3].5.3.1 Biotic
[3].5.3.2 Abiotic
[3].5.4 Ecological succession
[3].5.4.1 Primary succession
[3].5.4.2 Secondary succession
[3].6 Soil
[3].6.1 Characteristics of different types of soil
[3].6.1.1 Soil structure
[3].6.1.2 Porosity, capillarity and humus content
[3].6.2 Components of the soil
[3].6.2.1 Inorganic
[3].6.2.2 Organic
[3].6.2.3 Soil organisms
[3].6.2.4 Soil air
[3].6.2.5 Soil water
[3].6.3 Soil fertility
[3].6.3.1 Loss of soil fertility
[3].6.3.2 Renewal and maintenance of soil fertility
[3].7 Humans and Environment
[3].7.1 Diseases
[3].7.1.1 Common and endemic diseases
[3].7.1.2 Easily transmissible diseases and disease syndrome
[3].7.1.2.1 Poliomyelitis
[3].7.1.2.2 Cholera
[3].7.1.2.3 Tuberculosis
[3].7.1.2.4 Sexually transmitted disease/syndrome
[3].7.2 Pollution and its control
[3].7.2.1 Pollution: sources, types, effects and methods of control
[3].7.2.2 Pollution: Sanitation and sewage
[3].7.3 Conservation of Natural Resources
[3].7.4 Game reserves and National parks
[4] HEREDITY AND VARIATIONS
[4].1 Variation In Population
[4].1.1 Morphological variations in the physical appearance of individuals
[4].1.1.1 size
[4].1.1.2 Colour
[4].1.1.3 Fingerprints
[4].1.2 Physiological variation
[4].1.2.1 Ability to roll tongue
[4].1.2.2 Ability to taste phenylthiocarbamide
[4].1.2.3 Blood groups
[4].1.3 Application of discontinuous variation in crime detection
[4].1.4 Application of discontinuous variation in blood transfusion
[4].1.5 Application of discontinuous variation in determination of paternity
[4].2 Heredity
[4].2.1 Inheritance of characters in organisms
[4].2.1.1 Heritable and non-heritable characters
[4].2.2 Chromosomes - the basis of heredity
[4].2.2.1 Structure
[4].2.2.2 Process of transmission of hereditary characters from parents to offspring
[4].2.3 Probability in genetics and sex determination
[4].2.4 Application of the principles of heredity in:
[4].2.4.1 Agriculture
[4].2.4.2 Medicine
[4].2.5 Sex-linked characters
[5] EVOLUTION
[5].1 Theories of evolution
[5].1.1 Lamarck's theory
[5].1.2 Darwin's theory
[5].1.3 Organic theory
[5].2 Evidence of evolution
Jamb Biology Questions - Leaf
Question 1:
JAMB 1982
The absence of stomata shows that a leaf may be
SchoolNGR Classroom
A
From a floating plant
B
From submerged plant
C
Varigated
D
From a terrestrial plant
E
From parasitic green plant
View Answer & Explanation
Question 2:
JAMB 1983
In a dicot leaf, guard cells differ from other epidermal cells because they
SchoolNGR Classroom
A
Have no definite shape
B
Lack nuclei
C
Are smaller
D
Contain chloroplast
E
Lack vacuole
View Answer & Explanation
Question 3:
JAMB 1986
Which is the correct order of water loss from the leaf? 1 Mesophyll 2 Veins 3 Substomatals cavity 4 Stomata
SchoolNGR Classroom
A
3 → 2 → 1 → 4
B
2 → 3 → 1 → 4
C
2 → 1 → 3 → 4
D
1 → 2 → 3 → 4
View Answer & Explanation
Question 4:
JAMB 1987
Which of the plants is likely to have broad leaves and thin cuticle
SchoolNGR Classroom
A
R
B
S
C
T
D
U
View Answer & Explanation
Question 5:
JAMB 2003
The presence of sunken stomata and the folding of leaves are adaptations to
SchoolNGR Classroom
A
Prevent entry of pathogens
B
Reduce water loss
C
Remove excess water
D
Prevent guttation
View Answer & Explanation
1
2
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