All seed plants are heterosporous and produce pollen grains as well as seeds. However, there are...
All seed plants are heterosporous and produce pollen grains as well as seeds. However, there are examples of transitions between seedless vascular plants and seed plants. What seedless vascular plants are heterosporous?
Homework Answers
Seedless vascular plants include:
· Clubmosses.
· Ferns.
· Horsetails.
· Whisk ferns.
From the above examples –
· Club mosses are distinctive in having two kinds of spores heterosporous and homosporous.
1. Spike moss (Selaginellaceae) are heterosporous with different types of spores ,that is, microspores and megaspore.The micro give rise to male gametophytes and the mega give rise to the female gametophytes.
2. Quillworth(Isoetaceae) – they are Heterosporous plants with sporangia borne at the base of sporophylls which are similar to vegetative leaves. Megasporangia + microsporangia.
3. Whereas, Lycopodiaceae (club mosses) are homosporous. Only one kind of spore produced.
Add Answer to:
All seed plants are heterosporous and produce pollen grains as
well as seeds. However, there are...
PLEASE HELP WITH ALL QUESTIONS Which of the following statements is FALSE? Seeds include a source...
PLEASE HELP WITH ALL QUESTIONS
Which of the following statements is FALSE? Seeds include a source of nourishment of the developing embryo. A selective disadvantage of seeds is that the seed coat is highly vulnerable to invasion by fungi and bacteria. Most plants that produce seeds also produce nonflagellated sperm. Many seeds can remain dormant during long periods of drought or low temperatures. 5. In seed plants, fertilization can occur without the presence of water. 2 The world's tallest plants...
I need help. Please!!! Thanks in advance! riant seed J. Mon Vascular seed Vascular Seedless Nonvascular...
I need help. Please!!! Thanks in advance!
riant seed J. Mon Vascular seed Vascular Seedless Nonvascular Plants Vascular Plants Plants- Gymnosperms PLANTS Angiosperms CHARACTERISTI Examples Bryophytes (mosses Pteridophytes Cycads, ginkgo Flowering plants and liverworts) club mosses, conifers (hibiscus, horsetails, ferns eucalyptus etc.) Gametophyte produce gametes sperm Female gametophyte Male gametophyte 10 Potente en
2. As a way of summarizing what you have learned about land plants in the last...
2. As a way of summarizing what you have learned about land plants in the last two weeks, complete the following table that compares the important characteristics of land plants. Moss Fern Gymnosperm Angiosperm Features Dominant generation Vascular tissue (+/-) Seed (+/-) Fruit (+/-) Fertilization requires water? Pollen grain (+/-) Homosporous or heterosporous ? Examples
1. Complete this table. Fungi Plants Eukaryotic? Perform photosynthesis? Cells contain chloroplasts? Heterotrophs? 2. Complete this...
1. Complete this table. Fungi Plants Eukaryotic? Perform photosynthesis? Cells contain chloroplasts? Heterotrophs? 2. Complete this table. Plants Bryophytes Ferns Gymnosperms Angiosperms Perform photosynthesis? Waxy outer layer to reduce water loss? Contain vascular tissue? Produce seeds? Produce flowers? 3. What is the difference between pollen and a seed? 4. What kind of organism was the ancestor of all modern plants?
The ancestors of plants were probably algae. True/False 2) What do plants and the green algae...
The ancestors of plants were probably algae. True/False 2) What do plants and the green algae charophytes have in common? 3) What advantages did life in land provide for plants? 4) What were the disadvantages for life on land for plants? 5) What are some differences between plants and algae? 6) How do land plants maintain moisture in their cells? 7) What structures do land plants use to obtain resources such as water, minerals, and CO2? 8) List the two...
14. List examples of homoplasious traits (i.e. traits that have evolved independently) in lycophytes and seed...
14. List examples of homoplasious traits (i.e. traits that have evolved independently) in lycophytes and seed plants. 15. Illustrate the life cycle of gymnosperms. 16. Describe at least two major vascular plant taxa without seeds and explain why seedless nonvascular plants are a paraphyletic group. Draw a phylogeny to illustrate your arguments.
atch each terrestrial adaptation in plants to its correct description. Pollen grains Stomata and cuticle Obtain...
atch each terrestrial adaptation in plants to its correct description. Pollen grains Stomata and cuticle Obtain minerals and water from environment Increase surface area for photosynthesis Vascular tissue Leaves Reproductive -structure in angiosperms Minimize water loss plants Flowers Roots Deiver sperm cells ta femaie flower parts Nutnent and ui
28. Seed plants: A) are all heterosporous; B) have motile sperm; C) have photosynthetic, free- living...
28. Seed plants: A) are all heterosporous; B) have motile sperm; C) have photosynthetic, free- living gametophytes; D) are all monoecious; E) none of the above 29. The first land plants share a most recent common ancestor with a group of aquatic organisms that lived in the littoral zone known as: A) charophyceans; B) chlorophytes; C) catphytes; D) coanocytes; E) cycadophytes 30. Which of the following is true for organisms with zygotic meiosis? A) The gametes are produced from haploid...
_28. Seed plants: A) are all heterosporous; B) have motile sperm; C) have photosynthetic, free- living...
_28. Seed plants: A) are all heterosporous; B) have motile sperm; C) have photosynthetic, free- living gametophytes; D) are all monoecious; E) none of the above 29. The first land plants share a most recent common ancestor with a group of aquatic organisms that lived in the littoral zone known as: A) charophyceans; B) chlorophytes; C) catphytes; D) coanocytes; E) cycadophytes 30. Which of the following is true for organisms with zygotic meiosis? A) The gametes are produced from haploid...
1. Name the closest relatives to the land plants. 2. List advantages and problems faced by...
1. Name the closest relatives to the land plants. 2. List advantages and problems faced by early plants when they started colonizing terrestrial habitats. 3. List all the similarities that all current land plants share with charophytes. What distinguishes modern plants from charophytes? 4. Plants can be classified based on the presence or absence of___________________. Nonvascular plants are called…… 5. Which form dominates the nonvascular plant life cycle? Which form is dominant for vascular plants? 6. Which additional characteristics are...
PLEASE HELP WITH ALL QUESTIONS
Which of the following statements is FALSE? Seeds include a source of nourishment of the developing embryo. A selective disadvantage of seeds is that the seed coat is highly vulnerable to invasion by fungi and bacteria. Most plants that produce seeds also produce nonflagellated sperm. Many seeds can remain dormant during long periods of drought or low temperatures. 5. In seed plants, fertilization can occur without the presence of water. 2 The world's tallest plants...
I need help. Please!!! Thanks in advance!
riant seed J. Mon Vascular seed Vascular Seedless Nonvascular Plants Vascular Plants Plants- Gymnosperms PLANTS Angiosperms CHARACTERISTI Examples Bryophytes (mosses Pteridophytes Cycads, ginkgo Flowering plants and liverworts) club mosses, conifers (hibiscus, horsetails, ferns eucalyptus etc.) Gametophyte produce gametes sperm Female gametophyte Male gametophyte 10 Potente en
2. As a way of summarizing what you have learned about land plants in the last two weeks, complete the following table that compares the important characteristics of land plants. Moss Fern Gymnosperm Angiosperm Features Dominant generation Vascular tissue (+/-) Seed (+/-) Fruit (+/-) Fertilization requires water? Pollen grain (+/-) Homosporous or heterosporous ? Examples
1. Complete this table. Fungi Plants Eukaryotic? Perform photosynthesis? Cells contain chloroplasts? Heterotrophs? 2. Complete this table. Plants Bryophytes Ferns Gymnosperms Angiosperms Perform photosynthesis? Waxy outer layer to reduce water loss? Contain vascular tissue? Produce seeds? Produce flowers? 3. What is the difference between pollen and a seed? 4. What kind of organism was the ancestor of all modern plants?
atch each terrestrial adaptation in plants to its correct description. Pollen grains Stomata and cuticle Obtain minerals and water from environment Increase surface area for photosynthesis Vascular tissue Leaves Reproductive -structure in angiosperms Minimize water loss plants Flowers Roots Deiver sperm cells ta femaie flower parts Nutnent and ui
28. Seed plants: A) are all heterosporous; B) have motile sperm; C) have photosynthetic, free- living gametophytes; D) are all monoecious; E) none of the above 29. The first land plants share a most recent common ancestor with a group of aquatic organisms that lived in the littoral zone known as: A) charophyceans; B) chlorophytes; C) catphytes; D) coanocytes; E) cycadophytes 30. Which of the following is true for organisms with zygotic meiosis? A) The gametes are produced from haploid...
_28. Seed plants: A) are all heterosporous; B) have motile sperm; C) have photosynthetic, free- living gametophytes; D) are all monoecious; E) none of the above 29. The first land plants share a most recent common ancestor with a group of aquatic organisms that lived in the littoral zone known as: A) charophyceans; B) chlorophytes; C) catphytes; D) coanocytes; E) cycadophytes 30. Which of the following is true for organisms with zygotic meiosis? A) The gametes are produced from haploid...
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 11 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 11 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 11 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 11 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 11 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 11 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 11 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 11 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 11 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 11 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 11 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 11 months ago