Quiz 4: Gymnosperms - Angiosperms

NOT lignophyta apomorphies:

Flowers

Simple leaves

Vascular cambium

Cork cambium

integument with micropyle

Seeds

Flowers; Simple leaves

Meristem forming wood

a) Apical meristem of the shoot

b) Vascular cambium

c) Cork cambium

d) apical meristem of the root

Vascular cambium

Spermatophytes are defined by the presence of seeds. Which of the following are NOT developmental changes that occurred in this group in order to form the seed?

• Pollination droplet

• Reduction to one megaspore per megasporangium

• The production of diploid gametophyte

• Endosporic female gametophyte

• Integument forming seed coats

• Retention of the megaspore within the megasporangium

Pollination droplet; The production of diploid gametophyte

Haustorial pollen tube are formed in which of the following?

Equisetopsida

Polypodiaceae

Pinaceae

Sellaginaceae

Taxaceae

Pinaceae; Taxaceae

What is true about ovules?

• The integuments are haploid in all ovules

• The megagametophyte is the result of the fertilization of the zygote inside the ovule

• The micropyle blocks the entrance of the pollen in the ovules in gymnosperms

• The megagametophyte is developed inside the ovule

• They are the megasporangium with surrounding integuments

The megagametophyte is developed inside the ovule ; They are the megasporangium with surrounding integuments

What is true about leaves in cycads?

• The are simple

• They are pinnately compound

• They are acicular

• They lack chlorophyll

pinnately compound

Which of the following are distinctive traits of Ginkgo?

• It has seeds with arils

• It has fan-shaped leaves

• It has dichotomous venation

• It has needles

Fan-shaped leaves; Dichotomous venation

Which of the following are genera belonging to the family Pinaceae?

• Pinus

• Taxus

• Cycas

• Picea

Pinus; Picea

Which of the following is a character found only in the genus Taxaceae?

• Aril

• Integuments

• Striate pollen

• Linear leaves

Aril

Sepals

Calyx

Petals

Corolla

Stamens

Androecium

Pistils

Gynoecium

Please define in your OWN words what a flower is and how it evolved. Describe the steps in chronological order.

• Flowers are a reproductive shoot that can be defined by their carpels and/or stamens.

• Flowers first evolved from seed plants when they closed their ovules with carpels.

Which of the following structures are NOT part of the pistil?

• Ovary with ovules

• Tepals

• Filament

• Anthers

• Style

• Stigma

Tepals; Filament; Anthers

A pistil can be formed by several carpels.

True or False

True

Syncarpous means that two or more carpels are free or separate in the flower. 

True or False

False

The integuments at maturity (after fertilization) form the:___________________________

Seed coat