Relaxation of heart muscles and allowing the chambers to fill with blood called...? Mcqs

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Relaxation of heart muscles and allowing the chambers to fill with blood called...?

(A) Diastole
(B) Systole

(C) Cardiac arrest
(D) Heart failure

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Secondary wall is made up of ______...?

(A) Pectin and cellulose
(B) Cellulose and protein

(C) Cellulose and lignin
(D) Lignin and pectin

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Permanent hardness of water due to sulphate of metals can be destroyed by the use of ________ ...?

(A) Zeolites
(B) Sulphonides

(C) Lime
(D) Nitrates

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______ are the Breathing center of the body...?

(A) Nose
(B) Air

(C) Lungs
(D) None of these

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Bryophytes are ____plants...?

(A) Genotype
(B) Non-vascular

(C) Alleles
(D) Chromosomes

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Which of the following mass wasting phenomenon could a person outrun...?

(A) A person could not outrun any of these phenomena
(B) Creep

(C) Avalanche
(D) None of these

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Scalar quantities have ______ and suitable unit....?

(A) Magnitude
(B) Direction

(C) Both a and b
(D) None of them

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Which insect can survive without a head for one or more weeks...?

(A) Ladybird
(B) Bee

(C) Cockroach
(D) Termite

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Volvox is a polyphyletic genus of _______...?

(A) Green algae
(B) Red algae

(C) Brown algae
(D) None of these

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A type of cancer that affects the blood, bone marrow and lymphatic system called...?

(A) Lymphoma
(B) Carcinoma

(C) Leukemia
(D) Sarcoma

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