Form 2 Science Chapter 1: Biodiversity

Vocabulary flashcards covering fundamental concepts in biodiversity, conservation techniques, endemic species, and the classification of invertebrates from Form 2 Science.

What is Biodiversity?

The diversity of organisms, whether microorganisms, animals or plants, which exists as a result of the diversity of habitat and climate.

What are the importance of biodiversity?

Sources of food, balance of nature, medical and education.

What methods?

Banning the killing of endemic species, protect the habitats through creatong national parks and marine parks.

Invertebrates without legs, without segmented body

Sponge, corals, snails.

Invertebrates without legs with segmented body

Tapeworm, earthworm, leech

Invertebrates with legs

Ant, cockroach, butterfly

Invertebrates with more than 3 pairs of legs

Spider, prawn, centipede

Characteristics of Fish

Poikilothermic, breathe through gills, slimy skin, lay eggs, have fins and tails, external fertilization

Characteristics of Amphibians

Poikilothermic, live on land and water, moist skin, lay jelly-like eggs, external fertilization

Characteristics of Reptiles

Poikilothermic, breathe through lungs, have scales and hard skin, internal fertilization

Characteristics of Birds

Homeothermic, have feathers to maintain body temperature, have wings to help some birds fly, have a pair of scaly feet, breathe through lungs, internal fertilization

Characteristics of Mammals

Homeothermic, covered in fur or hair, give birth and nurse their young ones, breath through lungs, internal fertilization

Non-flowering plants

Moss, fern and conifer

Characteristics of non-flowering plants

Moss (non-vascular, reproduce by producing spores)

Fern (vascular, reproduce by producing spores)

Conifer (vascular, reproduce by bearing cones)

What is a cotyledon?

Sorted food that is used by the seed to germinate.

Flowering plants examples

Sunflower plant, paddy plant, lotus plant

Monocotyledon

One cotyledon

Leaf: Parallel veins

Stem: Non-woody stem

Root: Fibrous root

Example: paddy plant and maize plant

Dicotyledon

Two cotyledons

Leaf: Network-like veins

Stem: Woody stem

Root: Tap root

Example: tomato plant and durian tree