7. Which of the following statements is/are true? I. Pistil is a male reproductive part of plants whic consists of anther and filament. II. Stamen is the female reproductive organ of plan which consists of stigma, style, and ovary. III. Pistil is the ovule producing part of a flower. IV. Stamen is the pollen producing part of a flower a. I and II only b. I and III only c. II and IV only d. III and IV only

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Primate evolution

Primates are a relatively new species and first appeared in the fossil record nearly 55 million years ago. They may have originated as far back as the cretaceous period. Their fossils were observed in North America, Asia, and Europe. Long before the first monkeys and their prosimian relatives developed, most animal species thrived and died. The first primates did not exist until about 50-55 million years ago, even though the planet is 4.54 billion years old and the first life goes back at least 3.5 billion years. Dinosaurs had been extinct for 10 to 15 million years when this happened.