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BL1102 > Angiosperms > Flashcards

Angiosperms Flashcards

1
Q

What are phylogenetic trees?

A

Representations of evolutionary history and current relationships.

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2
Q

What does MRCA mean?

A

Most recent common ancestor.

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3
Q

What characterises all angiosperms?

A

Double fertilisation.

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4
Q

Sets of 4/5 floral parts, net-veined leaves and pollen triperturate are characteristics of which group?

A

Dicots

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5
Q

Sets of 2 floral parts, parallel-veined leaves and pollen uniperturate are characteristics of which group?

A

Monocots

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6
Q

How are gametes produced?

A

Meiosis

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7
Q

Which 3 genotypes are expressed in a seed?

A

Externally - paternal, Endosperm - maternal and embryo - mixture.

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8
Q

What is Linnaeus’ system of classification?

A

Using reproductive structures.

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9
Q

What are calyx?

A

Sepals

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10
Q

What are corolla?

A

Petals

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11
Q

What are androecium?

A

Stamens

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12
Q

What are gymnoecium?

A

Carpels (which become seeds).

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13
Q

What is bar coding?

A

Using DNA sequencing for particular sequences to create a global catalogue of plants.

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14
Q

Give 4 most species rich monocot families.

A

Orchidaceae, poaceae, cyperaceae and bromeliaceae.

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15
Q

What are poaceae?

A

Grasses

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16
Q

Give 4 most species rich dicot families.

A

Asteraceae, leguminosae, rubiaceae and euphorbiaceae.

17
Q

Which dicot family includes many fruits we eat, like apples, etc?

A

Rosaceae

18
Q

What is the Fibonacci sequence?

A

Flower parts occur in multiples of 3, 4 and 5.

19
Q

Suggest an explanation for the Fibonacci sequence.

A

Optimal packing.

20
Q

Give examples of things which have affected angiosperm evolution.

A

Tectonic plate shifts, temperature changes and climate change.

21
Q

Which group do angiosperms show phylogenic congruence with?

A

Insects

22
Q

What are pollination syndromes?

A

When plants and insects have adapted to pollinate together very specifically.

23
Q

How does climate change often affect species?

A

Their range shifts.

24
Q

What are some current threats to plant biodiversity?

A

Population growth, land use and climate change.

BL1102 (14 decks)

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