MCQ
Frogs differ from humans in possessing
  • A
    paired cerebral hemispheres
  • B
    hepatic portal system
  • nucleated red blood cells
  • D
    thyroid as well as parathyroid.

Answer

Correct option: C.
nucleated red blood cells
c
(c) : Human erythrocytes are enucleated, discoidal while in frogs erythrocytes are large, oval and biconvex nucleated cells. Erythrocytes are the carriers of haemoglobin.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

An example of synovial joint is found between
Which kind of therapy was given in 1990 to a four year old girl with Adenosine Deaminase (ADA) deficiency?
Percentage of recessive phenotype in a cross between $pp$ and $Pp$, when $P$ is dominant, $p$ recessive
Synaptic knob is bulb-like structure which is present.
Which of the following option regarding given statements is correct ?
(i) In fishes single circulation present.
(ii) In fishes the heart pumps out deoxygenated blood which is oxygenated by the gills.
(iii) In amphibians and reptiles incomplete double circulation present.
(iv) In amphibians and reptiles, oxygenated blood and the deoxygenated blood get mixed up in the single ventricle which pumps out mixed blood.
(v) In birds and mammals two separate circulatory pathways are present in these organisms, hence, these animals have double circulation.
(vi) In heart of fish deoxygenated blood present.
The blood leaving the kidney is significantly lower in
Identify the correct statements w.r.t. antibiotics

$(i)$ Fleming, Chain and Florey were awarded the Nobel prize in $1945$
$(ii)$ Antibiotics have greatly improved our capacity to treat deadly diseases
$(iii)$ Penicillin was used to treat American soldiers wounded in World War I

Which one of the following hormones though synthesised elsewhere, is stored and released by the master gland?
Identify the correct statement

$I$. The impulse of the heart beat originates from $SAN$

$II$. Rate of the heart is determined by $SAN$

$III$. Bundle of His/AV bundle is present in the interventricular septum

$IV$. Atrio Ventricular Node $(AVN)$ is situated in the lower left corner of the right auricle

Choose the correct option

Read the following
(i) Grasshopper is an example of XO type of sex determination in which males have only X- chromosome besides autosomes, whereas female have a pair of X-chromosome.
(ii) In mammals including man, XY type of sex determination is seen where both male and female have same number of chromosome.
(iii) The XO and XY sex determination mechanism are designated to be example of female heterogamety whereas ZW sex determination mechanism are designated to be example of male heterogamety.
(iv) In birds the female have zw chromosome whereas males have zz chromosome besides autosomes.
(v) The mutation arising due to change in a single base of DNA is known as point mutation.
(vi) The chemical and physical factors that induce mutation are reffered to as mutagens.
(vii) An analysis of traits in a several generation of a family is called pedigree analysis.
(viii) In pedigree analysis the symbol represents affected individuals and the symbol represents consanguineous mating.
(ix) Sickle-cell anaemia and phenylketonuria are example of X-linked recessive trait.
(x) Myotonic dystrophy is example of autosomal recessive trait.
(xi) Haemophilia is sex-linked recessive disease in which heterozygous female may transmit the diseases to sons.
choose the option with incorrect statements :-