Crocodile, penguin, whale and dogfish, all are chordates. So, all of these have gill slits at some stage of development.
Crocodile and penguin are similar to whale and dogfish in which one of the following features?
Held on 30 Apr 2010 · Verified 9 Jul 2026.
possess a solid single-stranded central nervous system
lay eggs and guard them till they hatch
possess bony skeleton
have gill slits at some stage
Sign in to track your attempts and accuracy.
Sign in to keep a private note on this question. Nothing you write is ever public.
Sweet potato and potato represent a certain type of evolution. Select the correct combination of terms to explain the evolution.
Which evolutionary phenomenon is depicted by the sketch given in figure? 
Which one of the following factors will not affect the Hardy-Weinberg equilibrium?
What is the correct order (old to recent) of periods in Paleozoic era?
Match List-I with List-II: $\begin{array}{|l|l|l|l|}\hline & \text{List I} & & \text{List II} \\\hline A. & \text{Gene pool} & I. & \text{Stable within a generation} \\\hline B. & \text{Genetic drift} & II. & \text{Change in gene frequency by chance} \\\hline C. & \text{Gene flow} & III. & \text{Transfer of genes into or out of population} \\\hline D & \text{Gene frequency} & IV. & \text{Total number of genes and their alleles} \\\hline \end{array}$ Chose the correct answer from the option given below:
Work through every NEET UG Evolution PYQ, year by year.