bio for csec

Question 1

what is biology?

Answer 1

the study of living things and and how living things stay alive

Question 2

WHAT IS GRIMNER?

Answer 2

growth respiration irritability movement nutrition excretion reproduction

Question 3

prokaryotes are?

Answer 3

chromosomes not enclosed in a nucleus

Question 4

eukaryotes

Answer 4

chromosomes enclosed in a nucleus

Question 5

viruses

Answer 5

smallest organisms
can only live in other organisms
do not have a cell structure

Question 6

prokaryotes

Answer 6

smallest organism with a cell structure
used in bio tech
responsible for decay of dead plants

Question 7

protocists

Answer 7

most unicelular
eg algae
feed on other organisms

Question 8

fungi

Answer 8

hetherotrophic organisms which obtain their food from the environment used for medicine
fermenting beer wine ect

Question 9

plants

Answer 9

source of food for many organisms

Question 10

monocotyledons

Answer 10

seed has one cotyledon or seed leaf
paralel leaf veins
eg corn

Question 11

dicotyledons

Answer 11

has two cotyledons or seed leaves
has branching veins
eg hibiscus

Question 12

arthropods

Answer 12

these are organisms with an exoskeleton and jointed limbs. eg woodlice cayfish crabs lobsters, spiders scorpions, locusts ants bees fleas

Question 13

molluscs

Answer 13

soft body covered by a shell

eg conch snail slug octopus squid clams oysters.

Question 14

chorodates

Answer 14

. Chordates are characterized by the presence of a notochord.

Question 15

cnidarians

Answer 15

The Cnidarians include the hydroids, jellyfish, anemones, and corals.

Question 16

nematodes

Answer 16

They are characterized by their long, thin, tube-like appearance that lacks a visually distinct head or tail.

Question 17

annelida

Answer 17

Nearly all annelids have a fluid-filled cavity between the outer body wall and the gut, and this is referred to as a coelom
Polychaeta, Oligochaeta (earthworms etc.) and Hirudinea (leeches).

Question 18

platyhelminthes

Answer 18

Platyhelminthes very commonly known as flatworms or tapeworms, these animals are soft-bodied invertebrate animals