Question 1 of 20 2,099 total questions
Gaseous exchange takes place in the adult toad through the
A buccal cavity, bladder and lungs
B buccal cavity, skin and lungs
C tympanic membrane, lungs and gills
D buccal cavity, skin and spiracle
E gills skin and buccal cavity
Water vapour is lost in plants during transpiration through
A stomata and lenticels
B xylem and stomata
C sclerenchyma and stomata
D parenchyma and lenticels
E guard cells and lenticels
Different tissues in plants contribute to the support of the parts as a result of the following characteristics
A malleability
B rigidity
C flexibility
D resilience
E hardness
The stems of young herbaceous plants are kept upright mainly by
A osmotic pressure
B turgor pressure
C transpiration pull
D suction pressure
E root pressure.
Which of the following statements is not correct about the functions of each group
A Cervical vertebrae support the neck
B Thoracic vertebrae articulate with the ribs
C Lumbar vertebrae provide attachment for abdominal muscles
D Sacral vertebrae support the skull and allow nodding and rotating movements
E Caudal vertebrae support the tail and provide attachment for tail muscle
The structure labelled A represents the
A transverse process
B neural spine
C neural canal
D centrum
E metapophysis
What type of vertebra is represented in the diagram?
A Atlas
B Axis
C Cervical vertebra
D Sacrum
E Lumbar vertebra
Which of the following is not a function of the mammalian skeleton? It
A gives the body its shape
B provides a framework on which internal organs are suspended
C protects soft and delicate parts of the body
D provides attachment for muscles
E contracts and relaxes to bring about movement
The stage of mitosis represented in the diagram is known as the
A telophase
B metaphase
C anaphase
D interphase
E prophase
Which of the following processes is not evident from the drawing?
A Lining up of the chromosomes at the equatorial plate
B Centromere attaching a pair of chromatids to a spindle fibre
C Chromatids held by centromere
D Absence of nuclear membrane
E Chromatids moving to the poles
At which of the following stages of mitosis do the two daughter chromosomes separate completely?
A Early prophase
B Telophase
C Anaphase
D Late prophase
E metaphase
Which of the following statements is not correct of respiration?
A Gaseous exchange occurs by diffusion
B Oxygen combines with haemoglobin at the respiratory surface
C Carbondioxide produced in the tissues is removed by the process of osmosis
D There are no special organs for respiration in plants
E In higher animals, respiratory gases are transported in solution.
At the end of mitosis the number of cells produced from a parent cell is
A four
B six
C eight
D three
E two
Which of the following structures differentiates an animal cell from a plant cell?
A Ribosomes
B Cell membrane
C Chloroplast
D Mitochondrion
E Lysosome
The structure in the cell that controls the movement of substances in and out of the cell is the
A cytoplasmic membrane
B nuclear membrane
C cytoplasm
D protoplasm
E endoplasm
Most of the energy in the cell is produced in the
A mitochondrion
B lysosome
C plastid
D Golgi apparatus
E cytoplasm
Which of the following structures controls the activities of the living cell?
A Nucleus
B Centrosome
C Chloroplast
D Golgi body
E Mitochondrion
Which of the following methods of reproduction is common to Paramecium and Amoeba?
A Conjugation
B Sexual reproduction
C Binary fission
D Budding
E Fragmentation
Which of the following processes will not introduce carbondioxide into the atmosphere?
A Breathing
B Photosynthesis
C Respiration
D Putrefaction
E Burning
The large intercellular air spaces which penetrate the tissues of most hyrophytes provide a pathway through
A carbondioxide absorbed by leaves can diffuse to the roots
B oxygen produced in the leaves can diffuse to the submerged parts
C salts absorbed by roots can reach other parts of the plant
D plant hormones are transported to various parts
E manufactured food is translocated
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