Plant Morphology: Psilotophyta

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What is the outermost layer of the axes in Psilotum?

Cortex tissue

Cutinized epidermis (correct)

Endodermis

Sclerenchyma cells

What is the function of the rhizoids produced by the surface cells of the rhizome in Psilotum?

To produce chlorophyll

To support the stem

To produce spores

To absorb water and nutrients from the soil (correct)

What is the structure called that contains three fused sporangia in Psilotum?

Synangium (correct)

Sporophyte

Gametophyte

Sporangium

What is the characteristic of the spores produced by Psilotum?

They are produced in tetrads Signup and view all the answers

What is the duration of time required for the spores of Psilotum to germinate?

6 months Signup and view all the answers

What is the characteristic feature of the stems of Equisetum?

They are ridged Signup and view all the answers

What is the division of the Equisetum 'Horsetail' plant?

Arthrophyta Signup and view all the answers

What is the function of the elators in Equisetum spores?

Respond to humidity changes Signup and view all the answers

What is a characteristic feature of microphyll leaves?

They have a single unbranched vein Signup and view all the answers

How do gametophytes produce the next generation in Equisetum?

Through both self-fertilization and cross-fertilization Signup and view all the answers

What is the characteristic feature of the archegonial neck in Equisetum?

It has four rows of neck cells Signup and view all the answers

What is the function of sporangia in Lycopodium?

To produce spores Signup and view all the answers

What is the result of fertilization of the egg in Lycopodium?

The formation of a zygote Signup and view all the answers

What is the characteristic of the sperm cells in Equisetum?

They are multiflagellated Signup and view all the answers

What is the characteristic feature of the Division Microphyllophyta?

They are small, leaved, and herbaceous plants Signup and view all the answers

What is the characteristic of the stem and root of Lycopodium?

They contain Potosteles or plectostele Signup and view all the answers

What is the characteristic of the early leaves of the sporophyte in Lycopodium?

They lack vascular tissue Signup and view all the answers

What is the fate of tetrads in Lycopodium spores?

They separate, leaving marking on spores Signup and view all the answers

What is the characteristic of the leaves in Selaginella?

They have basal ligules Signup and view all the answers

What is the arrangement of sporophylls in Selaginella?

In four vertical rows Signup and view all the answers

What type of stele is present in the stem of Selaginella?

Protostele Signup and view all the answers

What is the function of rhizophores in Selaginella?

To extend from the stem to the soil Signup and view all the answers

What is the characteristic of spore production in Selaginella?

Heterosporous Signup and view all the answers

What is the surface of the leaf where stomata are found in Selaginella?

Abaxial surface Signup and view all the answers

What is the fate of microspores in Selaginella?

They develop into male gametophytes Signup and view all the answers

How many sperms are produced in the male gametophyte?

128 to 256 Signup and view all the answers

What is the characteristic of the archegonia in Selaginella?

They have short necks with two tiers of four cells Signup and view all the answers

What is the significance of the zygote growing in Selaginella?

It develops a primary root and two primary leaves Signup and view all the answers

What is the characteristic of both male and female gametophytes in Selaginella?

They are saprophytic and lack chlorophyll Signup and view all the answers

How do female gametophytes develop within the megaspore in Selaginella?

By free nuclear division Signup and view all the answers