Plant Adaptive Modifications. By now, you should be familiar with the basic structures of plants…...

Plant Adaptive Modifications

By now, you should be familiar with the basic structures of

plants…Roots

Leaves

Flowers (only in angiosperms)

Fruit (only in angiosperms)

So where do these fit in?

Plant ModificationsEvolution has allowed for the modification from

the basic plant structures you have already learned.

Example 1:What do you think the following are the modified versions

Onions, garlic, and other bulbs

What do you think the following are the modified

versions of?

Thorns

What do you think the following are the modified

versions of?

Tendrils

Example 1: Make a prediction

Record in your notebook what modified part of a plant these might be.

Bulbs (like onions and garlic), thorns, and tendrils are all examples of modified shoots (stems and leaves).

Bulbs: These shoots are an adaptation for interrupted life....for existence in environments with a dormant season due to annual rainfall variations or to life in the temperate climates.

Thorns: Needed for protection against predation

Tendrils: Tendrils of grape are modified flowering shoots.

Shoots

What do you think the following are the modified versions of?

StemsThese are actually all examples of modified

stems (not leaves).

Succulent/photosynthetic Stems: In extremely dry environments, often the leaf becomes reduced and non-photosynthetic, and the stem becomes the primary photosynthetic organ of the plant. A barrel shape provides a low surface to volume ratio which reduces water loss.

LeavesSpines for Defense: The non-photosynthetic

leaves of cacti have become modified for defense.

Pitcher Plants: These are adapted for life in marshy/boggy nitrogen poor soil. The leaves are passive but lethal to insects.

Venus Fly Traps and Sundew: These are in the same family. They are adapted for life in wet nitrogen poor soils and both entrap insects.

Pine Needles

What do you think the

following are the modified versions of?

What do you think the

following are the modified

versions of?

RootsAerial roots are roots above the ground. They

are almost always adventitious. They are found in diverse plant species, including epiphytes such as orchids, tropical coastal swamp trees such as mangroves, the resourceful banyan trees, the warm-temperate rainforest.

Wild Orchid Wasp Mimichttps://www.youtube.com/watch?v=-h8I3cqpgnA

Video QuestionsAnswer these questions in your notebook

please!

1. What two strategies has the orchid adapted to attract the wasps?

2. What is the benefit of these adaptations to the orchid

3. Come up with a hypothesis for how the wasp might evolve to avoid how the orchid essentially “tricks” the wasp.

Plant Adaptive Modifications. By now, you should be familiar with the basic structures of plants…...

Documents

38 Angiosperms

Classification of Plants - Sciencepoint Cafemacsciencecafe.weebly.com/uploads/3/9/8/0/39808139/...Gymnosperms vs. Angiosperms •Means “naked seed” •Seeds that are exposed to

Tracheophyta: the seed plants. Two different kinds Gymnosperms: have an unprotected seed (naked in cone like structures) Angiosperms: seeds are enclosed

3 Angiosperms PM 3 Angiosperms - Wikispaces5+Section+3... · angiosperms prod uce seeds that are enclosed in fr uits. ... angiosperm. Figure 13 shows the parts of a typical ﬂower

Angiosperms VII

Seed Plants Angiosperms and Gymnosperms. Gymnosperms Seed plants that produce “naked seeds”. Seeds are not enclosed by a fruit. The oldest type of seed

Classification of field crops - anujjindal.in · • Angiosperms -Seed-producing flowering plants whose seeds are enclosed ... non-flowering plants whose seeds are unenclosed or “naked.”

22-4 & 22-5 Seed Plants. Seed Plants Divided into two groups: –Gymnosperms – have seeds directly on surfaces of cones –Angiosperms – have seeds within

MODIFICATIONS INDUCED - Plant · PDF fileroot modifications in Vicia, faba seedlings grown from x-rayed seeds (5). ... Summary External andhistological modifications which occur in

Angiosperms – The Scientific name for the flowering plants. These plants produce covered seeds that develop inside the ovary of a flower

Seed Plants - Monadnock Regional High School · Seed Plants Gymnosperms: seeds on the outside Angiosperms: seeds protected by fruit. Characteristics of Seed Plants 1. Seed plants

Angiosperms III

Seed Plants: Gymnosperms - cnx.org4.p… · Like angiosperms, but unlike other gymnosperms, ... Gymnosperms are heterosporous seed plants that produce naked seeds. They appeared in

The morphophysiological dormancy in Amborella trichopoda ... · The morphophysiological dormancy in Amborella trichopoda seeds is a pleisiomorphic trait in angiosperms Bruno Fogliani1,2,*,

PLANT DIVERSITY 2 Plant Kingdom Bryophytes Ferns Gymnosperms Angiosperms Vascular Seed Plants: -- Have seeds -- Have pollen (containing sperm) seedless

Angiosperms Earth’s dominant plants. Angiosperm Characteristics Vascular Flowering plants Double fertilization Seeds are covered in a fruit Dominant sporophyte

The Angiosperms

The Structure of Flowers. Angiosperms – flowering plants whose seeds are enclosed in an ovary, which becomes a fruit Gymnosperms – plants whose seeds

Angiosperms II

Gymnosperms and Angiosperms. GymnospermsAngiosperms 1. Seeds 2. Leaves 3. Reproduction 4. Example 5. Quick Drawing 1. Seeds 2. Leaves 3. Reproduction