Which of the following is not an attribute of a population?
a.
Sex ratio
b.
Natality
c.
Mortality
d.
Species interaction
Correct Answer
Step-by-Step AI Explanation
Verified Method
Sex ratio, natality, and mortality are population attributes. Species interaction is an ecological relationship between different species, not an attribute of a single population.
Q2mcq
The process of growth is maximum during
a.
Log phase
Correct Answer
b.
Lag phase
c.
Senescence
d.
Dormancy
Step-by-Step AI Explanation
Verified Method
In a population growth curve, the exponential or log phase shows the maximum growth rate.
Q3mcq
The roots that originate from the base of the stem are
a.
Fibrous roots
Correct Answer
b.
Primary roots
c.
Prop roots
d.
Lateral roots
Step-by-Step AI Explanation
Verified Method
Fibrous root systems arise from the base of the stem, typically in monocots.
Q4mcq
Match the following diseases with the causative organism and select the correct option.
Sickle cell anaemia is an autosomal recessive disorder caused by mutation in the beta-globin gene on chromosome 11.
Q9mcq
Match the following columns and select the correct option.
a.
(a) Gregarious, polyphagous pest – (i) Asterias; (b) Adult with radial symmetry and larva with bilateral symmetry – (iii) Ctenoplana; (c) Book lungs – (ii) Scorpion; (d) Bioluminescence – (iv) Locusta
b.
(a) Gregarious, polyphagous pest – (iv) Locusta; (b) Adult with radial symmetry and larva with bilateral symmetry – (i) Asterias; (c) Book lungs – (ii) Scorpion; (d) Bioluminescence – (iii) Ctenoplana
Correct Answer
c.
(a) Gregarious, polyphagous pest – (iii) Ctenoplana; (b) Adult with radial symmetry and larva with bilateral symmetry – (ii) Scorpion; (c) Book lungs – (i) Asterias; (d) Bioluminescence – (iv) Locusta
d.
(a) Gregarious, polyphagous pest – (ii) Scorpion; (b) Adult with radial symmetry and larva with bilateral symmetry – (i) Asterias; (c) Book lungs – (iii) Ctenoplana; (d) Bioluminescence – (iv) Locusta
Step-by-Step AI Explanation
Verified Method
Locusta is a gregarious polyphagous pest; Asterias shows radial symmetry as adult and bilateral symmetry in larva; scorpion has book lungs; Ctenoplana is bioluminescent.
Q10mcq
The infectious stage of Plasmodium that enters the human body is
a.
Trophozoites
b.
Sporozoites
Correct Answer
c.
Female gametocytes
d.
Male gametocytes
Step-by-Step AI Explanation
Verified Method
Sporozoites are injected into humans by the bite of an infected female Anopheles mosquito.
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Which of the following statements are true for the phylum Chordata?
(a) In Urochordata notochord extends from head to tail and it is present throughout their life.
(b) In Vertebrata notochord is present during the embryonic period only.
(c) Central nervous system is dorsal and hollow.
(d) Chordata is divided into 3 subphyla: Hemichordata, Tunicata and Cephalochordata.
a.
(d) and (c)
b.
(c) and (a)
c.
(a) and (b)
d.
(b) and (c)
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Match the organism with its use in biotechnology.
(a) Bacillus thuringiensis
(b) Thermus aquaticus
(c) Agrobacterium tumefaciens
(d) Salmonella typhimurium
Select the correct option from the following:
(a) (b) (c) (d)
a.
(ii) (iv) (iii) (i)
b.
(iv) (iii) (i) (ii)
c.
(iii) (ii) (iv) (i)
d.
(iii) (iv) (i) (ii)
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Match the following concerning essential elements and their functions in plants.
(a) Iron
(b) Zinc
(c) Boron
(d) Manganese
Select the correct option.
(a) (b) (c) (d)
a.
(ii) (i) (iv) (iii)
b.
(iv) (iii) (ii) (i)
c.
(iii) (iv) (ii) (i)
d.
(iv) (i) (ii) (iii)
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Match the following:
(a) Inhibitor of catalytic activity
(b) Possess peptide bonds
(c) Cell wall material in fungi
(d) Secondary metabolite
Choose the correct option from the following:
(a) (b) (c) (d)
a.
(ii) (iv) (iii) (i)
b.
(iii) (i) (iv) (ii)
c.
(iii) (iv) (i) (ii)
d.
(ii) (iii) (i) (iv)
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The transverse section of a plant shows the following anatomical features:
(a) Large number of scattered vascular bundles surrounded by bundle sheath
(b) Large conspicuous parenchymatous ground tissue
(c) Vascular bundles conjoint and closed
(d) Phloem parenchyma absent
Identify the category of plant and its part:
a.
Monocotyledonous stem
b.
Monocotyledonous root
c.
Dicotyledonous stem
d.
Dicotyledonous root
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Match the following columns and select the correct option.
Column-I Column-II
(a) 6-15 pairs of gill slits
(b) Heterocercal caudal fin
(c) Air bladder
(d) Poison sting
a.
(ii) (iii) (iv) (i)
b.
(iii) (iv) (i) (ii)
c.
(iv) (ii) (iii) (i)
d.
(i) (iv) (iii) (ii)
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Match the following columns and select the correct option.
Column-I Column-II
(a) 6-15 pairs of gill slits (i) Trygon
(b) Heterocercal caudal fin (ii) Cyclostomes
(c) Air bladder (iii) Chondrichthyes
(d) Poison sting (iv) Osteichthyes
a.
(ii) (iii) (iv) (i)
b.
(iii) (iv) (i) (ii)
c.
(iv) (ii) (iii) (i)
d.
(i) (iv) (iii) (ii)
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Which of the following refer to correct example(s) of organisms which have evolved due to changes in environment brought about by anthropogenic action?
(a) Darwin’s Finches of Galapagos islands.
(b) Herbicide resistant weeds.
(c) Drug resistant eukaryotes.
(d) Man-created breeds of domesticated animals like dogs.
a.
only (a)
b.
(a) and (c)
c.
(b), (c) and (d)
d.
only (d)
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Match the following with respect to meiosis.
(a) Zygotene (i) Terminalization
(b) Pachytene (ii) Chiasmata
(c) Diplotene (iii) Crossing over
(d) Diakinesis (iv) Synapsis
Select the correct option from the following:
a.
(iii) (iv) (i) (ii)
b.
(iv) (iii) (ii) (i)
c.
(i) (ii) (iv) (iii)
d.
(ii) (iv) (iii) (i)
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Match the following with respect to meiosis.
(a) Zygotene
(b) Pachytene
(c) Diplotene
(d) Diakinesis
Select the correct option from the following:
(a) (b) (c) (d)
a.
(iii) (iv) (i) (ii)
b.
(iv) (iii) (ii) (i)
c.
(i) (ii) (iv) (iii)
d.
(ii) (iv) (iii) (i)
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Match the trophic levels with their correct species examples in grassland ecosystem.
(a) Fourth trophic level
(b) Second trophic level
(c) First trophic level
(d) Third trophic level
Select the correct option.
a.
(ii) (iii) (iv) (i)
b.
(iii) (ii) (i) (iv)
c.
(iv) (iii) (ii) (i)
d.
(i) (ii) (iii) (iv)
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Match the following columns and select the correct option.
Column I Column II
(a) Placenta (i) Androgens
(b) Zona pellucida (ii) Human Chorionic Gonadotropin (hCG)
(c) Bulbo-urethral glands (iii) Layer of the ovum
(d) Leydig cells (iv) Lubrication of the penis
a.
(iv) (iii) (i) (ii)
b.
(i) (iv) (ii) (iii)
c.
(iii) (ii) (iv) (i)
d.
(ii) (iii) (iv) (i)
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Match the following columns and select the correct option.
Column I Column II
(a) Eosinophils (i) Immune response
(b) Basophils (ii) Phagocytosis
(c) Neutrophils (iii) Release histaminase, destructive enzymes
(d) Lymphocytes (iv) Release granules containing histamine
a.
(iii) (iv) (ii) (i)
b.
(iv) (i) (ii) (iii)
c.
(i) (ii) (iv) (iii)
d.
(ii) (i) (iii) (iv)
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Match the following columns and select the correct option.
Column I Column II
(a) Pituitary gland (i) Grave’s disease
(b) Thyroid gland (ii) Diabetes mellitus
(c) Adrenal gland (iii) Diabetes insipidus
(d) Pancreas (iv) Addison’s disease
a.
(iv) (iii) (i) (ii)
b.
(iii) (ii) (i) (iv)
c.
(iii) (i) (iv) (ii)
d.
(ii) (i) (iv) (iii)
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Match the following columns and select the correct option.
Column I Column II
(a) Floating ribs (i) Located between second and seventh ribs
(b) Acromion (ii) Head of the humerus
(c) Scapula (iii) Clavicle
(d) Glenoid cavity (iv) Do not connect with the sternum
a.
(ii) (iv) (i) (iii)
b.
(i) (iii) (ii) (iv)
c.
(iii) (ii) (iv) (i)
d.
(iv) (iii) (i) (ii)
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Match the following columns and select the correct option.
Column I Column II
(a) Floating ribs (i) Located between second and seventh ribs
(b) Acromion (ii) Head of the humerus
(c) Scapula (iii) Clavicle
(d) Glenoid cavity (iv) Do not connect with the sternum
a.
(a) (ii), (b) (iv), (c) (i), (d) (iii)
b.
(a) (i), (b) (iii), (c) (ii), (d) (iv)
c.
(a) (iii), (b) (ii), (c) (iv), (d) (i)
d.
(a) (iv), (b) (iii), (c) (i), (d) (ii)
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