Vascular And Nonvascular Plants Worksheet Pdf - Fill and Sign ... - Free Printable

Problem Analysis:

The task involves answering a series of questions related to plant biology, specifically focusing on vascular plants, cell division, plant life cycles, and other biological concepts. Below is a detailed explanation and solution for each question.

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Question 1: Name the 3-division of seedless vascular plants and name a member of each division.

#### Solution:
Seedless vascular plants are divided into three main groups:

1. Lycophytes (Division Lycopodiophyta):
- Example: Selaginella (also known as spike moss or club moss).

2. Sphenophytes (Division Sphenophyta):
- Example: Equisetum (also known as horsetail).

3. Pteridophytes (Division Pteridophyta):
- Example: Ferns, such as *Adiantum* (maidenhair fern) or *Pteris* (brake fern).

#### Answer:
- Lycophytes: Selaginella
- Sphenophytes: Equisetum
- Pteridophytes: Adiantum

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Question 2: What is the common name for mosses, liverworts, and hornworts?

#### Solution:
Mosses, liverworts, and hornworts are collectively known as bryophytes. These are non-vascular plants that do not have true roots, stems, or leaves.

#### Answer:
Bryophytes

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Question 3: Reproduce facts what type of reproduction?

#### Solution:
Reproduction in plants can occur through two main types:

1. Asexual Reproduction: This involves the production of offspring without the fusion of gametes. Examples include vegetative propagation (e.g., runners in strawberries), fragmentation, and spore formation.
2. Sexual Reproduction: This involves the fusion of male and female gametes to produce offspring. It typically occurs through the formation of seeds in flowering plants or spores in non-flowering plants.

#### Answer:
Asexual and sexual reproduction.

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Question 4: What is the 2-stage life cycle of plant cells called?

#### Solution:
The two-stage life cycle of plant cells is called the alternation of generations. This cycle alternates between two distinct phases:

1. Diploid Sporophyte Generation: The dominant phase in most plants, which produces spores through meiosis.
2. Haploid Gametophyte Generation: The phase that develops from spores and produces gametes (eggs and sperm) through mitosis.

#### Answer:
Alternation of generations

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Question 5: State the 2-cycle life stages.

#### Solution:
The two life stages in the alternation of generations are:

1. Sporophyte Stage: The diploid (2n) stage, which produces spores via meiosis.
2. Gametophyte Stage: The haploid (n) stage, which produces gametes (eggs and sperm) via mitosis.

#### Answer:
Sporophyte stage and gametophyte stage.

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Question 6: Which stage is DOMINANT in the haplo-diplontic (mosses, liverworts, hornworts)?

#### Solution:
In bryophytes (mosses, liverworts, and hornworts), the gametophyte stage is dominant. This means that the haploid (n) gametophyte generation is the primary, free-living form, while the sporophyte (diploid, 2n) stage is dependent on the gametophyte for nutrition.

#### Answer:
Gametophyte stage

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Question 7: How do karyotypes represent?

#### Solution:
A karyotype is a visual representation of an organism's chromosomes, arranged in pairs based on size, shape, and centromere position. Karyotypes are used to study chromosome structure, number, and arrangement, which can help identify genetic abnormalities or variations.

#### Answer:
Karyotypes represent the organization and structure of an organism's chromosomes.

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Question 8: Which stage of the moon looks like a half-pie crescent?

#### Solution:
The stage of the moon that looks like a half-pie crescent is the first quarter or last quarter phase. During these phases, the moon appears as a semicircle, with half of its visible surface illuminated.

#### Answer:
First quarter or last quarter

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Question 9: Name the division for ferns.

#### Solution:
Ferns belong to the division Pteridophyta. This group includes plants that reproduce via spores and do not produce seeds.

#### Answer:
Pteridophyta

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Question 10: Why are plants plasma small?

#### Solution:
Plant cells have smaller plasma membranes compared to animal cells because they contain large central vacuoles. These vacuoles store water, nutrients, and waste products, taking up a significant portion of the cell volume. As a result, the plasma membrane occupies a relatively smaller area in plant cells.

#### Answer:
Plant cells have large central vacuoles, which occupy much of the cell volume, leaving less space for the plasma membrane.

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Question 11: Do trees have TRUE roots, stems, or leaves?

#### Solution:
Yes, trees have true roots, stems, and leaves. Trees are vascular plants (angiosperms or gymnosperms) that possess well-developed root systems, stems with xylem and phloem for transport, and leaves for photosynthesis.

#### Answer:
Yes, trees have true roots, stems, and leaves.

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Question 12: Is the type of area of the mesophyll green?

#### Solution:
The mesophyll is the inner tissue of a leaf, located between the upper and lower epidermis. It contains chloroplasts, which give it a green color due to the presence of chlorophyll. Therefore, the mesophyll is indeed green.

#### Answer:
Yes, the mesophyll is green.

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Question 13: Some gymnosperms never grow close together in natural areas. Give 2 reasons why this is so.

#### Solution:
Gymnosperms (e.g., conifers, cycads) sometimes grow apart in natural areas due to the following reasons:

1. Seed Dispersal Mechanisms: Many gymnosperms rely on wind or animals for seed dispersal. Seeds may be carried long distances, leading to scattered distribution.
2. Environmental Factors: Gymnosperms often thrive in specific environmental conditions (e.g., dry climates, high altitudes). If these conditions are not uniform across an area, the plants will grow only where suitable habitats exist.

#### Answer:
1. Seed dispersal mechanisms (wind or animals).
2. Specific environmental requirements.

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Question 14: What covers the outside of a man’s plane to prevent water loss?

#### Solution:
The outer covering of a plant that prevents water loss is called the cuticle. The cuticle is a waxy layer produced by the epidermal cells, which helps reduce transpiration (water loss) and protect the plant from desiccation.

#### Answer:
Cuticle

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Question 15: What are stomata plants?

#### Solution:
Stomata are small pores found primarily on the leaves and stems of plants. They allow for gas exchange (CO₂ in, O₂ out) during photosynthesis and respiration. Stomata also regulate water loss through transpiration.

#### Answer:
Stomata are small pores in plant leaves and stems that facilitate gas exchange and regulate water loss.

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Final Answer Summary:

1. Lycophytes: Selaginella; Sphenophytes: Equisetum; Pteridophytes: Adiantum.
2. Bryophytes.
3. Asexual and sexual reproduction.
4. Alternation of generations.
5. Sporophyte stage and gametophyte stage.
6. Gametophyte stage.
7. Karyotypes represent the organization and structure of an organism's chromosomes.
8. First quarter or last quarter.
9. Pteridophyta.
10. Plant cells have large central vacuoles, which occupy much of the cell volume, leaving less space for the plasma membrane.
11. Yes, trees have true roots, stems, and leaves.
12. Yes, the mesophyll is green.
13. Seed dispersal mechanisms and specific environmental requirements.
14. Cuticle.
15. Stomata are small pores in plant leaves and stems that facilitate gas exchange and regulate water loss.

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