Animal showing thigmotaxis is

Animals showing metameric segmentation are

Name the following : Animal showing three germ layers

Name the animal showing periodic migrations .

Which of the following animals shows discontinuous distribution?

Which of the following animals shows discontinuous distribution?

Name two animals showing internal fertilization. What are the characteristics of the gametes produced by such animals?

Give two example of each of the following : (a) Animals having external gills (b) Anaerobes (c ) Animals having internal gills ( d ) Animals groups showing tracheal respiration (e ) Animals reveling buccopharyngeal respiration

What is parthenogenesis? Name an animal showing this.