STD 11 - 4. Animal kingdom — BIOLOGY STD 11 Science — Question

$I.$ Diffusion membrane is made up of $3$ layers

$II.$ Solubility of $CO _{2}$ in blood is higher than $O _{2}$ by $25$ times

$III.$ Breathing volumes are estimated by spirometer

$IV.$ High $H ^{+}$ in blood favours oxygen dissociation

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$I.$ In liverworts sexual reproduction occurs by the fusion of antherozoids and egg, which are produced in anthridium and archegonium, respectively

$II$. Both male and female sex organs may be present on same thalli or different thalli

$III.$ Zygote give rise to sporophyte, which is differentiated into food, seta and capsule

$IV$. Some cells of capsule undergoes meiosis and give rise to haploid spores

$A$. Presence of a mid-dorsal, solid and double nerve cord.

$B$. Presence of closed circulatory system.

$C$. Presence of paired pharyngeal gill slits.

$D$. Presence of dorsal heart

$E$. Triploblastic pseudocoelomate animals.

Choose the correct answer from the options given below: