Skip to content
Dabour HubLEARN · PRACTICE · EXPLORESign inStudent

1.7Chapter 1: Classification and Life

Classifying plants — Alhussan Biology - Stage 7 Revision Notes & Topical Questions

5 min read 8 parts Lesson 7 of 11 2 quizzes

📚 Alhussan Biology - Stage 7 Hub / Topical Revision
🩺
100% Curriculum Specification Match Lesson Doctor Verified
The only platform with 100% curriculum specification match and verified interactive question banks.
0%read
Lesson summary

Biology 1.7 Classifying plants — Alhussan International Academy — Biology (Stages 7–9) notes: Describe the main groups of plants and classify a plant using its features.Plants — living things that make their own food by photosynthesis, so the food you eat and the oxygen you breat…

  • Two big groups
  • Most species
  • Non-flowering plants
  • Liverworts and mosses
  • Seed plants
  • Two main types

Section 1 of 8Plants and their groups

Plants and their groups
Plants
  • Plants living things that make their own food by photosynthesis, so the food you eat and the oxygen you breathe depend on them.
  • Almost all plants have green parts where they make food, with chlorophyll to trap light.
Two big groups
  • Two big groups just as animals are invertebrates and vertebrates, plants are seed plants and non-flowering plants.
Clues
  • Clues even plants that reproduce with flowers do not have flowers all the time, so biologists look for other clues.
Most species
  • Most species most plant species are flowering plants.

Section 2 of 8Non-flowering plants

1
Non-flowering plants
  • Non-flowering plants the oldest types of plants, on Earth for millions of years, usually small and found in damp, shady places.
  • They do not produce flowers, and reproduce using spores that grow into new plants.
2
Liverworts and mosses
  • Liverworts and mosses they take all the water they need from their environment without roots.
  • They have no true roots, stems or leaves with veins, and no water-carrying vessels.
  • They are always relatively small and are anchored by hair-like rhizoids.
  • They reproduce using spores and make no flowers.
3
Ferns
  • Ferns usually bigger than mosses and liverworts and more like flowering plants.
  • They have roots, stems and fronds that look like leaves, with water-carrying vessels.
  • They reproduce using spores which develop under the fronds.

Section 3 of 8Seed plants

Seed plants
Seed plants
  • Seed plants they reproduce by making seeds and have roots, stems and leaves with specialised water transport vessels.
Two main types
  • Two main types conifers and true flowering plants.

Section 4 of 8Conifers

  • Conifers (gymnosperms)
    • they can grow in very harsh conditions and, in good conditions, the tallest plants in the world are conifers.
    • They have narrow, needle-like leaves, which cut water loss.
    • They have simple reproductive structures, and the seeds are naked, found loose in cones.
    • Most are evergreen trees, such as pine and fir.

Section 5 of 8Flowering plants

1
Flowering plants (angiosperms)
  • Flowering plants (angiosperms) they produce flowers and seeds, which are contained in fruits.
  • Flowers are pollinated by wind or by animals such as insects, birds and bats.
  • Not all have bright flowers, as grasses and cereals such as rice and maize have small, dull flowers.
  • Much food comes from flowering plants, from flour for bread to fruit and vegetables.
2
Seed leaves
  • Seed leaves monocotyledons have one seed leaf and parallel leaf veins,
    • as in grass,
    • and dicotyledons have two seed leaves and branching veins,
    • as in a rose.

Section 6 of 8Choosing the group

1
Does it make flowers and fruits? If yes, it is a flowering plant.
2
Does it make seeds in cones? If yes, it is a conifer.
3
Does it have fronds and true roots, with spores under the fronds? If yes, it is a fern.
4
Is it small and flat with no roots, in a damp place? If yes, it is a moss or liverwort.
Choosing the group
Spores and seeds
  • Spores and seeds mosses and ferns scatter huge numbers of light spores in the wind,
  • while flowering plants use animals, wind and water to carry fruits and seeds,
  • so they colonise many habitats.
Uses
  • Uses farmers rely on flowering plants such as wheat and rice for food, and foresters plant conifers for timber.

Section 7 of 8Key terms

TermMeaning
SporeA tiny reproductive cell that can grow into a new plant.
VesselA tube that carries water or food in a plant.
RhizoidA hair-like structure that anchors a moss.
FrondThe leaf of a fern.
ConiferA plant that bears seeds in cones.
AngiospermA flowering plant that makes seeds inside fruits.

Section 8 of 8Exam technique

1
Saying conifers have flowers — they bear seeds in cones.
2
Thinking mosses have roots — they have rhizoids.
3
Confusing spores with seeds — a seed contains a food store and an embryo.
4
Forgetting that grasses are flowering plants — they have small, dull flowers.

?What do you want to solve now?

Practice questionsTraining questions with instant feedback - not an exam. Official exam - gradedCheckpoint Quiz in MasterStudy: your mark is saved to your progress.

Last updated: