Life history and plants

Question 1

Endemic meaning

Answer 1

It cannot be found any other place

Question 2

Basic three principle of life history

Answer 2

1. Speceis are not immutable
2. Descendent with modification
3. Change by natural selection

Question 3

Synapomorphy

Answer 3

A characteristic present in an ancestral species and shared exclusively by its evolutionary descendants (Opposite : Autapomorphy)
-> It can help us understand evolutionary history, but…
It can be lost. 2. Similar traits can arise independently (convergent evolution)

Question 4

Monophyletic

Answer 4

Animals Monophyletic : Come from an common ancestors

Question 5

Explain how adaptation of use of oxygen allow organisms to evolve

Answer 5

Oxygen is toxic molecule for living organisms, but the use of oxygen for aerobic respiration provides a greater amount of energy to maintain more complicating metabolisms

Question 6

Explain the significance of stromatolites

Answer 6

They have cyanobacterial cells and thus produce enough oxygen for the evolution of oxidation reactions as an energy source.

Question 7

Explain the “Cambrian explosion”

Answer 7

O2 concentration increased to the current level. This helped diversification of animals and marine fauna
Showing evolutionary arm and race

Question 8

List up the three main body plans

Answer 8

asymmetry, radical symmetry and bilateral symmetry

Question 9

Describe the benefit of radical body structure

Answer 9

The effects from surroundings such as temperature, wind, waves distribute evenly

Question 10

Describe the benefit of bilateral body structure

Answer 10

Well-balanced, well-organised movement and having heads. (Triploblasty)

Question 11

List up the structure of Angiosperm

Answer 11

Petal, Carpel (stigma, ovule, style), Stamen (anther and filament)