The echinoderms,hemichordates,and chordates had which of the following larvae as a common ancestral form?
- ATornaria
- BTrochophore
- CDipleurula
- DBipinnaria
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Similar Questions
Give the correct match in the following:
Column-$I$ Column-$II$ $(A)$ Flame Cells $(p)$ Sponges $(B)$ Collar Cells $(q)$ Hydra $(C)$ Stinging cells $(r)$ Planaria $(s)$ Ascaris
| Column-$I$ | Column-$II$ |
|---|---|
| $(A)$ Flame Cells | $(p)$ Sponges |
| $(B)$ Collar Cells | $(q)$ Hydra |
| $(C)$ Stinging cells | $(r)$ Planaria |
| $(s)$ Ascaris |
Medium
View SolutionSelect the correct option in respect of characteristics of each group:-
Characteristic Cyclostomata Chondrichthyes Osteichthyes $(i)$ Habitat Marine Marine Marine,Fresh Water (ii) Mouth Sucking mouth Ventral mouth Terminal mouth (iii) Gill Slits $6-15$ Pairs $5-7$ Pairs $4$ Pairs (iv) Scales Absent Placoid Cycloid/Ctenoid $(v)$ Fins Unpaired Paired Paired
| Characteristic | Cyclostomata | Chondrichthyes | Osteichthyes |
| $(i)$ Habitat | Marine | Marine | Marine,Fresh Water |
| (ii) Mouth | Sucking mouth | Ventral mouth | Terminal mouth |
| (iii) Gill Slits | $6-15$ Pairs | $5-7$ Pairs | $4$ Pairs |
| (iv) Scales | Absent | Placoid | Cycloid/Ctenoid |
| $(v)$ Fins | Unpaired | Paired | Paired |
Easy
View SolutionThe difference between male and female $Anopheles$ occurs in:
Select the correct option for the labeled part $X$ and $Y$ from the given diagram.
Medium
View SolutionThe branch of science dealing with the study of birds is
Easy
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