Question 1 of 20 2,099 total questions
During sexual reproduction in Paramecium, how many times does the zygote divide to produce eight nuclei?
Which of the following is not an effector organ?
A Tongue
B Skin
C Nose bridge
D Ear glands
Which of the following neurons may not have myelin sheath?
A Effector cells
B Intermediate neurons
C Motor neurons
D Sensory neurons
ore sweat is produced during muscular exercise because
A the contracting muscles produce water
B fermentation occurs in muscles
C the temperature of the body rises
D the muscle fatigues
Filtrate in the Bowman’s capsule contains vitamins because
A only all le amount is required by the body
B they can be reabsorbed into the blood
C they have low molecular weight
D most of them are fat soluble.
Which of the following structures is not involve in respiration?
A Lung books
B Mouth
C Stomach
D Trachea
Inhaled air is made warm and moist in the
A epiglottis
B nasal cavity
C trachea
D mouth
Which of the following statements best describes haemoglobin? It is
A yellowish in colour
B a red blood cell
C an oxygen carrying pigment
D needed for blood clotting
A monocot root IS different from a dicot root by having
A endodermis
B cambium
C wide pith
D root hair.
Secondary growth is brought about by the activities of the
A phellogen and phelloderm
B phellogen and procambium.
C vascular cambium and phelloderm
D vascular cambium and phellogen
The part labelled I is called the
A nucleolus
B centromere
C centriole
D spindle
The part labelled II in the diagram is
A centriole
B chloroplast
C chromatid
D tonoplast
Cells that utilise a lot of energy are characterized by the presence of a large number of
A vacuoles
B mitochondria
C endoplasmic reticulum
D ribosomes
The following processes are involved in water movement in the endodermis except
A osmosis
B vascuolar pathway
C diffusion
D active transport
In which of the following habitats is Paramecium no found
A Pond
B Aquarium
C Lake
D Puddle
If Amoeba is placed in a salt solution. the contractile vacuoles would
A be bursting more frequently
B be more numerous
C be formed less frequently
D grow bigger before they burst
Which of the following pairs of cells carry out the same function?
A Check cell and red blood cell
B Spermatozoan and ovum
C Palisade cell and epidermal cell
D Root tip cell and guard cell
Which of the following cells are not regarded as specialized?
A Sperm cells
B Root up cells
C Muscle cells
D somatic cells
Which of the following structures is a tissue
A Vessel element
B Blood
C Sieve tube element
D Erythrocyte
The branch of Biology that deals with the principles of classification of organisms is known as
A biological index
B nomenclature
C taxonomy
D ecology
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