WorksheetsLife Cycles of Flowering Plants
Total questions: 25
Worksheet time: 25mins
The life cycle of a flowering plant begins with a seed. When the root pushes downward into the soil and the stem grows upward towards the sunlight, this first stage of growth is called:
Pollination
Germination
Seed dispersal
A plant grows leaves and stems after germination. Later, buds appear and eventually open into flowers. What is the main purpose of the flowers in the life cycle of plants?
To make food through photosynthesis
To produce seeds for the next generation
To provide shade for the plant
Some plants produce seeds inside fruits such as apples, while others like strawberries have seeds on the outside. What do both of these examples show us about seeds?
Seeds can only grow if hidden inside the fruit
Seeds can be found in different parts of the fruit depending on the plant
Only fruits with seeds inside can grow into new plants
Not all flowering plants are brightly colored. Grass plants, for example, produce flowers that are not showy. What is the main reason grass flowers do not need to be colorful?
They do not want to attract animals
They are pollinated by wind instead of insects
They already have fruits growing on them
The male part of the flower is called the stamen. Which of the following correctly describes the function of the anther, which is found at the tip of the stamen?
It produces pollen grains that are needed for reproduction
It collects nectar to attract bees and butterflies
It connects the stigma to the ovary
The female reproductive part of the flower is called the pistil. Which part of the pistil is sticky and helps capture pollen grains during pollination?
Ovary
Stigma
Filament
The ovary of a flower contains ovules. What important event happens inside the ovules after pollination and fertilization?
The ovary changes color
Seeds are formed
Nectar is produced
Pollination is the transfer of pollen grains from the anther to the stigma. Which of the following best explains why pollination is important to plants?
It allows plants to compete with each other
It is necessary for the production of fruits and seeds
It makes flowers colorful and attractive
When pollen from the anther of a flower lands on the stigma of the same flower or another flower on the same plant, the process is called:
Cross-pollination
Self-pollination
Artificial pollination
If a bee lands on a flower to sip nectar and pollen grains stick to its body, then the bee flies to another flower and drops pollen on the stigma, what type of pollination has occurred?
Wind pollination
Self-pollination
Cross-pollination
More than 70% of plant species depend on insects, birds, or animals to transport pollen. Why do so many plants depend on these pollinators?
Because pollinators give food to plants
Because pollinators help move pollen to ensure seeds are formed
Because pollinators make plants grow faster
Coconuts can float across oceans and later grow on a faraway beach. What method of seed dispersal is this an example of?
By animals
By water
By wind
A dandelion produces seeds with fluffy parts that allow them to float through the air when blown. What type of seed dispersal is this?
By water
By wind
By animals
An apple tree produces sweet fruit to attract animals that eat the fruit and carry the seeds far away. What kind of seed dispersal is this?
By animals (internal dispersal)
By wind
By wind
Seeds contain a small baby plant inside. What is this baby plant called?
Cotyledon
Embryo
Ovule
The seed coat protects the seed until conditions are right for germination. What happens first when the seed coat absorbs water and softens?
The seedling makes food through photosynthesis
The embryo starts to grow and the root emerges
The cotyledon falls off the seed
Cotyledons are important in germination because:
They act like roots that absorb water
They protect the ovary of the plant
Why can a desert plant not easily survive in a rainforest?
It cannot adapt to the very wet environment
It will grow too tall
It will make too many seeds
The process by which pollen grains reach the stigma and fertilization happens to form seeds is part of which larger cycle?
The life cycle of flowering plants
The water cycle
The nitrogen cycle
The male reproductive part of the flower, made up of the anther and filament, is called the (a) .
The female reproductive part of the flower, consisting of the stigma, style, and ovary, is called the (a) .
The female reproductive part of the flower, consisting of the stigma, style, and ovary, is called the (a) .
The process by which a seed grows into a young plant is called (a) .
The process by which a seed grows into a young plant is called (a) .
The part of the flower that attracts bees and other insects because of their colors.
(a)
