Lecture 12 - Fleming Plant 1

Question 1

Unlike animal development, plant development does not go through cell .. or ..

Answer 1

cleavage, gastrulation

Question 2

.., …, … aren’t found in plants

Answer 2

lysosomes, centrioles, flagella (excluding some plant sperm)

Question 3

the … , .. and .. .. are unique to plants

Answer 3

tonoplast, vacuole and cell wall

• relative to animals, not fungi

Question 4

when plants divide a new cell wall forms in the .. of the cell, meaning daughter cells are always linked

Answer 4

middle

Question 5

there’s lots of . early in animal development, cells differentiate during ..

Answer 5

segmentation, embryogenesis

Question 6

plants have a repeated .. -> … -> … -> … structure

Answer 6

leaf, stem, leaf, stem

Question 7

stem cells form patterns based on … concentration

Answer 7

morphogen

Question 8

morphgens are … … that determine when and where things happen

Answer 8

chemical signals

Question 9

auxin is a molecule derived from … and is a weak …

Answer 9

tryptophan, acid

-exists as either IAAH or IAA-

Question 10

cell membranes have pH around … and auxin can’t normally leave cell, unless through … … which export auxin to the cytoplasm where auxin becomes charged as …
Auxin importers then allow auxin to travel to next cell and down it (this prevents backflow mechanisms too)

Answer 10

7.2
PIN proteins
IAAH