Zoology Question

1. Animal Classification

Based on:

Level of organization (cellular organ system)

Symmetry (asymmetrical, radial, bilateral)

Germ layers (diploblastic, triploblastic)

Body cavity (acoelomate, pseudocoelomate, coelomate)

Major Phyla:

Phylum

Key Features

Examples

Porifera

Pores, no tissues

Sponges

Cnidaria

Radial symmetry, stinging cells

Hydra, Jellyfish

Platyhelminthes

Flatworms, no body cavity

Planaria

Nematoda

Roundworms, pseudocoelom

Ascaris

Annelida

Segmented body

Earthworm

Arthropoda

Jointed legs, exoskeleton

Insects

Mollusca

Soft body, shell

Snail

Echinodermata

Spiny skin, marine

Starfish

Chordata

Notochord present

Humans

2. Cell Structure (Animal Cell)

No cell wall

Important organelles:

Nucleus control center

Mitochondria energy (ATP)

Ribosomes protein synthesis

Lysosomes waste digestion

3. Human Physiology

Circulatory System

Heart: 4 chambers

Blood:

RBC oxygen transport

WBC immunity

Platelets clotting

Respiratory System

Gas exchange in alveoli

Oxygen in, CO out

Digestive System

Mouth Stomach Intestine

Enzymes break food into nutrients

Nervous System

Brain, spinal cord, nerves

Controls body responses

4. Reproduction

Types:

Asexual one parent (faster)

Sexual two parents (variation)

Humans:

Male: sperm production

Female: ovum production

Fertilization zygote embryo

5. Genetics (Basic)

Father of genetics: Mendel

Terms:

Gene unit of heredity

Allele variant of gene

Dominant / Recessive

6. Evolution

Darwins Theory:

Natural selection

Survival of the fittest

Organisms adapt over time

7. Ecology

Ecosystem = living + non-living

Food chain:

Producer Consumer Decomposer

Energy flow is unidirectional

How to Actually Get Better (since you care about improvement)

Stop collecting notes like trophies.

Do this:

Read Understand Rewrite in your own words

Draw diagrams (heart, neuron, digestive system)

Solve questions daily

Revise weekly, not before exams like everyone else who panics

WRITE MY PAPER