plant development - lecture 6 Flashcards Preview

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Flashcards in plant development - lecture 6 Deck (17)
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1

What are the 3 key differences between plant and animal life cycles?

- postembyronic development
- cell movement and planes of division
- totipotency

2

key difference 1.1 - post embryonic development

- Most adult organs formed during embryogenesis whereas plant embryos do not contain any organs found in the adult

plant organs are generated by meristems during post embryonic

3

key difference 2 - cell movement and division planes

- animal cells move and migrate during embryonic development , whereas plants have cell was that cement them

4

What is a anticlinal division in plants?

- cell plate at right angle to surface

5

What is a periclinal division in plants?

- cell plate parallel to surface

6

Key difference 3 - totipotency

Animals cannot regenerate from somatic parts but plant cells can regenerate numerous body part.

7

Why do plants remain totipotent?

sessile ( anchored to the ground)

8

What occurs in pollination/fertilisation?

Germinates on top of the stigma. Pollen tube enters the stylle. One sperm fertilises female egg to get the embryo

9

What are the 4 stages of embryo development?

- Two cell proembryo
- Globular embryo
- heart embryo
- walking stick embryo

10

What are the 2 types of endosperm tissue?

Dicot and monocot

11

What is different about the first zygotic division?

- asymmetric
- produces small apical cell and larger basal cell

12

What is the basal cell?

suspensor

13

What is the apical cell?

embryo

14

What does whorl 1 produce?

sepal

15

What does whorl 2 produce?

petals

16

What does whorl 3 produce?

stamens

17

What does whorl 4 produce?

carpels