Lab 8b-Fruit & Seed (Angiosperms)

Question 1

The megagametophyte generation, which was so prominent in ovules of gymnosperms, is not even evident in the ovule of angiosperms. What has happened to it?

Answer 1

cells that make it up start to degenerate

Question 2

In seed plant phyla other than anthophytes, the megagametophyte was the food source for a growing embryo. What is the food source for the developing embryo of anthophyta (fruit and seed)

Answer 2

endosperm (will become completely depleted by developing embryo)

Question 3

In anthophytes (fruit and seed), the ___ plant supplies nutrients and growth promoting ___ to the embryo of the ripening seed through the ___

Answer 3

parent, hormones, endosperm

Question 4

Cotyledons are modified ___ leaves that are part of the living ___. The food they contain can be quickly utilized during ___

Answer 4

food, embryo, germination

Question 5

In eudicot flowering plants all or only part of the ___ is consumed during the seed ripening, and two plump ___ occupy most of the ripe seed

Answer 5

endosperm, cotyledons

Question 6

In monocots, the embryo has a ___ cotyledon and the seed can have variable amounts of endosperm

Answer 6

single

Question 7

ovary=

Answer 7

fruit

Question 8

ovule=

Answer 8

seed

Question 9

Seed coat=

Answer 9

skin-like protective covering of seed

Question 10

Hilum=

Answer 10

scar on seed, point of attachment of a stalk that attached the seed to the wall of the fruit

Question 11

Raphe=

Answer 11

a small ride at one end of the scar (hilum), remnant of the stalk

Question 12

Micropyle=

Answer 12

opening at the end of the hilum (scar of seed) where the pollen tube entered just prior to fertilization

Question 13

Radicle=

Answer 13

embryonic root

Question 14

fruit developed from an ___, there will be ___ scars(s)

Answer 14

ovary, two
-where it was attached to flower stalk and where the style and stigma were attached

Question 15

seed developed from an ___, there will be ___ scar(s)

Answer 15

ovule, one
-where it was attached to the placenta INSIDE the ovary

Question 16

The ovary develops into the ___ of the fruit

Answer 16

pericarp

Question 17

The pericarp can divide into three distinct layers: ___ (outer layer), ___ (middle), and ___ (inner)

Answer 17

exocarp, mesocarp, endocarp