HOMEWORK QUESTIONS

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created 4 years ago by CHEIDI
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biology 1302
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1

Which of these characteristics is shared by algae and seed plants?
A) embryo development within gametangia
B) roots and shoots
C) vascular tissue
D) pollen
E) chloroplasts

chloroplasts

2

Ovules are found within structure _____.

ovaries

3

Which of these is unique to flowering plants?

a) haploid gametophytes
b) double fertilization
c) pollen production
d) a dominant sporophyte generation
e) an embryo surrounded by nutritive tissue

double fertilization

4

The male gametophytes of flowering plants are also referred to as _____.

a) male sporophytes
b) embryo sacs
c) endosperm
d) megaspores
e) pollen grains

pollen grains

5

In flowering plants the integuments of the ovule develop into a(n) _____.

a) cotyledon
b) sporophyte
c) seed coat
d) endosperm
e) fruit

seed coat

6

A carpel is composed of _____.

a) stigma, style, and ovary
b) ovary, ovule, and anther
c) petal, sepal, and stamen
d) ovule, megasporocyte, and anther
e) zygote, anther, and endosperm

stigma,style and ovary

7

A stamen consists of _____.

anther and filament

8

In angiosperms, pollination is the transfer of pollen grain to the _____ of a flower on the same plant or another plant of the same species.

a) stigma
b) ovary
c) style
d) ovulate cone
e) anther

stigma

9

Where do fern antheridia develop?

on the underside of the gametophyte.

10

The conspicuous part of a fern plant is a _____

conspicuous, diploid sporophyte

11

In mosses gametes are produced by _____; in ferns gametes are produced by _____.

mitosis and mitosis

12

In pines, the female gametophyte contains _____, each of which contains a(n) _____.

archegonia ... egg

13

In pines, an embryo is a(n) _____.

immature sporophyte

14

In pine trees, pollen grains get to the ovule via the _____.

micropyle

15

Which of these statements is true about the gametophyte tissue that surrounds the pine embryo?

It functions as a haploid food reserve.
-It functions as a triploid food reserve.
-It develops from the fusion of a microspore and a megaspore.
-It functions as a diploid food reserve.
-It is the remnant of the pollen tube.

It functions as a haploid food reserve.

16

Of the four haploid cells produced by a pine cone's megasporocyte (megaspore mother cell), _____ survive(s).

one

17

In the pine, microsporangia form _____ microspores by _____.

haploid ... meiosis

18

In moss, _____ produce sperm.

antheridia

19

The sperm produced by mosses require _____ to reach an archegonium.

moisture

20

The following statements describe something about the body structures or functions of fungi. Identify those statements that are correct.
Select all that apply.

Nutrients can flow through the entire mycelium in fungi with coenocytic hyphae, but not in fungi with septate hyphae.
Some fungi secrete digestive enzymes into the environment and then absorb the digested nutrients.
All fungi are heterotrophs; some species live as decomposers and others as symbionts.
Some fungi can grow as either filamentous or single-celled forms.
Mycelia are made up of small-diameter hyphae that form an interwoven mass, providing more surface area for nutrient absorption.
Cellulose gives rigidity and strength to the cell walls of fungi.

Some fungi secrete digestive enzymes into the environment and then absorb the digested nutrients.
All fungi are heterotrophs; some species live as decomposers and others as symbionts.
Some fungi can grow as either filamentous or single-celled forms.
Mycelia are made up of small-diameter hyphae that form an interwoven mass, providing more surface area for nutrient absorption.

21

What is the Septobasidium spp?

Fungal hyphae penetrate a living scale insect's body and absorb its nutrients. The individual insect that serves as the food source is immobilized, but the rest of the insect colony benefits from the shelter the fungus provides.

parasite

22

Angiosperms are most closely related to _____.

gymnosperms

The branching pattern of the phylogenetic tree in the activity indicates that angiosperms are most closely related to gymnosperms.

23

Which of these was the dominant plant group at the time that dinosaurs were the dominant animals?

gymnosperms

Both gymnosperms and dinosaurs were dominant during the Mesozoic.

24

Plants evolved from green algae approximately _____ million years ago.

475

25

_____ are an example of seedless vascular plants.

Ferns

Ferns are seedless vascular plants.

26

The living plants that are most similar to the first plants to bear gametangia are the _____.

bryophytes

Bryophytes, such as mosses, are the extant plants that are most similar to the first plants to bear gametangia.