Gr 11 Plant diversity

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Revision quiz on the biodiversity of plants

Email address *

Name *

Surname *

Teacher *

Mrs Arlow

Mrs Clulow

Mrs Vissian

Ms Viljoen

1. The ovary of angiosperms develops into a... *

Flower

Fruit

Leaf

Nut

2. Which were the first plants to colonise dry land, including the liverworts. *

Gymnosperms

Spermatophytes

Bryophytes

Pteridophytes

3. The structure of a Pteridophyte that represents the gametophyte generation. *

Prothallus

Frond

Fiddlehead

Sori

4. The cross-pollination strategy, where the stigma ripens before the anthers mature and release pollen grains. *

Dioecious

Protandry

Protogyny

Incompatibility

5. Refer to the cladogram of plant evolution below. Which labels would be most suitable for the developments that evolved at points A, B and C respectively.

vascular tissue, seeds, seeds enclosed in fruit

roots, larger leaves, seeds

conducting tissue, cones, protected seeds

Xylem and phloem, complex leaves, seeds enclosed in fruit

Clear selection

6. Which is NOT a characteristic of Bryophytes? *

No vascular tissue

Plant body is a thallus

Homosporous

Sporophyte is the dominant generation

7. Study the structure of a flower below. The male reproductive structures are labelled by the following letters *

A, B, F

C, D, E

A, B

C, D

8. Referring to the diagram of the flower above in question 7. The correct labels for the parts labelled A, D and G respectively, are... *

filament, stigma, leaf

stamen, pistal, sepal

anther, style, sepal

stamen, ovary, petal

9. Species that are found naturally in a particular area and nowhere else, are said to be... *

indigenous

endemic

native

original

10. Which of the following is not used to classify plants *

The presence/ absence of xylem and phloem

Dependence on water for reproduction

How tall they grow

The presence/absence of flowers or cones

11. Refer to the diagram below. Which statement is TRUE for generation A and generation B respectively? *

A is haploid, B is diploid

A is diploid, B is haploid

A is the dominant generation in Bryophytes, B is the dominant generation in Gymnosperms

Both options 1 and 3 are correct

Both options 2 and 3 are correct

12. Why has the development of seeds been so vital to the biodiversity of spermatophytes? *

Seeds may remain dormant in unfavourable conditions

The embryo is protected by a testa and cotyledons

Dispersal strategies avoid competition with the parent plant

Genetic diversity enhance chances of survival

All of the above

13. Looking at the image below, which is the most likely pollinator of this plant? (Could you justify your choice?) *

Birds

Insects

Bats

Wind

14. Looking at the image below, which is the most likely pollinator? (Could you justify your choice?) *

Insects

Birds

Wind

Rodents

15. Which of the following is a disadvantage of asexual reproduction? *

Only one parent is needed

Weakness in the parent will be transmitted to offspring

Reliance on pollinators is not needed

Lots of offspring are produced in a short time

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