Unit A: Biological Diversity

10 images of some cold-blooded vertebrates such as snakes, lizards and alligators typically having dry, scaly skin

Errors during meiosis can alter the number of chromosomes in cells and lead to genetic disorders.

A study on bird feeders and beak sizes shows how an everyday human activity can affect the evolution of another species.

9 images of plants in some large naturally occuring habitats called biomes such as tundra, grasslands and boreal forests

6 images of some seedlings sprouting as one of the stages towards full plant growth

10 images showing some stages of plant growth from planting to sprouts growing to harvesting

8 images representing some of the needs of plants for healthy growth such as water, nutrients and light

12 images of some major parts of plants such as stems, roots, flowers and leaves

6 images of some seeds which are the fertilized part of a plant used for germinating new plants such as fennel, kiwis and pumpkins

14 images of warm-blooded vertebrate animals such as cats, polar bears and wolves that eat meat and other animal tissue

15 images of some warm-blooded vertebrate animals such as cows, deer and giraffes that eat plant vegetation

10 images of some warm-blooded vertebrate animals such as brown bears and chimpanzees that eat a diet of plants and animals

6 images of some mammals classified as primates such as monkeys, apes and humans and characterized by nails on their hands and feet

6 images of insect mouthparts.

10 images of some animals that have 6 legs and 3 main body parts consisting of a head, thorax and abdomen.