Flowers and seeds

Flowers and seeds

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Overview
Using this Resource
Connecting to the Curriculum
Marking Student Responses
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Further Resources
This task is about parts of a flower, pollination and seed dispersal.

Question 1Change answer

flower-label.png
a)  Match the parts of this flower with the correct number from the diagram.
Flower part Number
Anther(s): where pollen grains are produced. 1234
Ovary: where the seeds will develop. 1234
Petal(s): often brightly coloured (to help attract insects). 1234

Question 1Change answer

b)  In the process of pollination, pollen must be transferred from the male part of the flower to
     the female part of another or the same flower.
     Give two ways that the pollen can be transferred.

Question 1Change answer

c)  Plants need to form seeds. They also need to have these seeds dispersed away from the parent plant.
5-seeds.png
The diagram shows five different seeds.
Choose any two and state how that seed is spread away from the parent plant.
Seed number How the seed spreads away from the parent plant
12345
12345
Task administration: 
This task can be completed with pencil and paper or online. 
Copyright: 
NZCER sketch
Level:
4
Curriculum info: 
Science, Knowledge, Living World
Keywords: 
Life processes, plants, flowers, seeds, pollination, seed dispersal
Description of task: 
Task: name the parts of a flower and describe methods of pollination and seed dispersal. Assessment focus: structure and function of flowers.
Curriculum Links: 
Science capabilities
The capabilities focus is brought about by the conversations you have and the questions you ask.

Capability: Gather and interpret data
This resource provides opportunities to discuss using direct observations (from diagrams) as evidence.
Science capability: Gather and interpret data  

Science capabilities: 
Gather and interpret data
Making Better Sense: 
Flower Parts
Answers/responses: 
 

Y8 (09/1997)
a) Anther: 3
Ovary: 4
Petal: 1		 3 correct – very difficult

2 correct – very easy

1 correct – very easy
b) Any 2 of:

  • wind
  • bees
  • flies
  • birds
  • wasps
  • bats
  • insects
  • mice

 

 2 correct – moderate

1 correct – easy
c) Any 2 of:

•   1: wind
•   2: explosion (sun/heat opens pods)
•   3: animal (clings to fur of)
•   4: wind
•   5: animal (eaten by)

 2 correct – difficult

1 correct – easy
Diagnostic and formative information: 

a)

Correct response (%) for the flower parts:
Anther – 26%, Part 2 (Stigma) of the flower was wrongly chosen by 69%.
Ovary – 88%.
Petal – 97%.

b)

A breakdown of correct answers made by students.

Method of transfer
Bee
Wind
Birds
Other

% of correct answers
49%
34%
7%
10%

c)
Seed number Number of students who tried to explain the seed dispersal Number who got this correct (%)

1
2
3
4
5

36
19
23
19
23

75%
16%
26%
63%
22%