The colour of a freshly prepared solution filled in a test tube is pale green. � The solution could be:

Define the terms pollination and fertilization. Draw a diagram of a pistil showing pollen tube growth into the ovule and label the following:

pollen grain, male gamete, female gamete, ovary.

Describe in brief the role of (i) testis (ii) seminal vesicle,(iii) vas deferens,(iv) ureter and (v) prostate gland in human male reproductive system.

A student prepared an aqueous solution of CuS04 in beaker X and an aqueous solution of FeS04 in beaker Y. He then dropped some iron pieces in beaker X and some zinc pieces in beaker Y. after about 10 hours he observed that the solutions in X and Y respectively appear:

A student adds 4 mL of acetic acid to a test tube containing 4 ml of distilled water. He then shakes the test tube and leaves it to settle. after about, 10 minutes he observes: