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Question 1

Pollination Syndromes

Answer 1

suites of flower traits that have evolved in response to natural selection imposed by different pollen vectors

Question 2

megaspores are

Answer 2

haploid

Question 3

megasporocyte undergoes

Answer 3

meiosis

Question 4

microspores are

Answer 4

haploid

Question 5

pollen vectors can be

Answer 5

abiotic (wind, water) or biotic (animals).

Question 6

simple fruits

Answer 6

can be either dry or fleshy, and develop from a flower with a single pistil.

Question 7

Aggregate fruits

Answer 7

are derived from a single flower with several to many pistils.

Question 8

multiple fruits

Answer 8

are derived from several to many individual flowers in a single inflorescence.

Question 9

berry

Answer 9

From simple or compound ovary, with more than one seed, and with fleshy pericarp

Question 10

true berry

Answer 10

relatively soft pericarp

– Tomatoes,grapes,peppers, blueberries.ba

Question 11

drupe

Answer 11

Simple fleshy fruit with single seed enclosed by hard, stony, endocarp (aka “pit”)
• Stone fruits: peach, cherry, plum, apricot

Question 12

pome

Answer 12

Simple fleshy fruit with endocarp tough and papery, central core containing the seeds
• Pome fruits: apple or pearl

Question 13

a fruit is

Answer 13

a mature ovary

Question 14

double fertilization means that

Answer 14

one sperm is needed to fertilize the egg, and a second sperm is needed to fertilize the polar nuclei

Question 15

“bt maize”

Answer 15

includes bacterial genes that produce a toxin that reduces damage from insect pests

Question 16

which statement concerning grafting is correct

Answer 16

stocks provide root systems for grafting

Question 17

some dioecious species have XY genotype for male and XX for female. after double fertilization, what would be the genotypes of the embryos and endosperm nuclei?

Answer 17

embryo XX/endosperm XXX or embryo XY/endosperm XXY

Question 18

a small flower with green petals is most likely

Answer 18

wind pollinated

Question 19

the black dots that cover strawberries are actually fruits formed from the separate carpels of a single flower. the fleshy and tasty portion of a strawberry derives from the receptacle of a flower with many separate carpels. therefore a strawberry is

Answer 19

both an aggregate fruit and an accessory fruit

Question 20

In alternation of generations in plants _____.

Answer 20

the gametes are produced by the gametophyte through mitosis and cellular differentiation

Question 21

Flowers bear seeds in protective chambers called _____.

Answer 21

ovaries

Question 22

Which one of the following is diploid?

Answer 22

megasporocyte

Question 23

When wind is the main method of pollination __________.

Answer 23

all of the above

Question 24

What is endosperm?

Answer 24

stored food in a seed

Question 25

In angiosperms, double fertilization produces _____.

Answer 25

the embryo and the endosperm

Question 26

In angiosperms, the seed coat develops from the _____.

Answer 26

integuments

Question 27

Why do seeds need water to germinate?

Answer 27

Following hydration, enzymes break down stored food and make it available for the embryo