CH 2: The significance of seeds
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Questions and Answers

What is the primary function of the seed coat?

  • To facilitate seed dispersal
  • To provide nutrients to the embryonic plant
  • To induce seed dormancy
  • To protect the embryonic plant from desiccation, physical damage, and microbial invasion (correct)

What is the embryonic shoot called?

  • Cotyledon
  • Hypocotyl
  • Plumule (correct)
  • Radicle

How do seeds contribute to genetic diversity?

  • By cloning their parent plants
  • By undergoing random mutations
  • By inheriting the same genetic traits as their parent plants
  • By inheriting a unique combination of genetic traits through sexual reproduction (correct)

Which of the following is not a seed dispersal mechanism?

<p>Clonal propagation (D)</p> Signup and view all the answers

What is the purpose of seed dormancy?

<p>To prevent seeds from germinating under unfavorable conditions (B)</p> Signup and view all the answers

What is the primary function of seed banks?

<p>To preserve seed viability for future generations (D)</p> Signup and view all the answers

Which of the following is not a cultivated seed crop?

<p>Sorghum (A)</p> Signup and view all the answers

What is the significance of endemic seeds?

<p>They offer gluten-free alternatives and culinary diversity in regions across the globe (B)</p> Signup and view all the answers

How do seeds contribute to ecological resilience?

<p>By inheriting a unique combination of genetic traits through sexual reproduction (C)</p> Signup and view all the answers

What is the embryonic root called?

<p>Radicle (C)</p> Signup and view all the answers

What role do seeds play in the propagation of plant species?

<p>Seeds serve as genetic repositories for plant species. (C)</p> Signup and view all the answers

How are seeds formed?

<p>Seeds are formed from the fertilized ovules of plants. (A)</p> Signup and view all the answers

What are cotyledons?

<p>Cotyledons are the embryonic leaves within a seed. (D)</p> Signup and view all the answers

How are monocotyledon and dicotyledon seeds classified?

<p>Based on the number of cotyledons they possess. (C)</p> Signup and view all the answers

What is the primary function of cotyledons in seeds?

<p>To provide nourishment to the growing plant. (C)</p> Signup and view all the answers

What is the significance of seeds in sustaining biodiversity?

<p>Seeds serve as a means of preserving genetic diversity across plant species. (A)</p> Signup and view all the answers

What are the key components of seed anatomy?

<p>Cotyledons, endosperm, and embryo. (C)</p> Signup and view all the answers

How do monocotyledons differ from dicotyledons in terms of floral structures?

<p>Dicotyledons have a broader range of floral structures. (C)</p> Signup and view all the answers

What is the significance of seeds in the sustenance of fauna?

<p>Seeds serve as a source of food for many animals. (D)</p> Signup and view all the answers

What is the main difference between monocotyledons and dicotyledons?

<p>Monocotyledons have a single cotyledon, while dicotyledons have two. (A)</p> Signup and view all the answers

What is the role of seed banks in preserving biodiversity?

<p>Storing seeds at low humidity levels and sub-zero temperatures (D)</p> Signup and view all the answers

Why do some seeds enter dormancy?

<p>To synchronize their emergence with optimal growth conditions (D)</p> Signup and view all the answers

What is the primary function of seeds in ensuring ecological resilience?

<p>Guarding genetic diversity and adaptive traits (B)</p> Signup and view all the answers

How do seeds contribute to culinary diversity?

<p>By offering gluten-free alternatives (B)</p> Signup and view all the answers

In what way do seed dispersal mechanisms help plant populations?

<p>By facilitating colonization of new territories (A)</p> Signup and view all the answers

Why do seed banks store seeds at low humidity levels and sub-zero temperatures?

<p>To preserve seed viability for future generations (A)</p> Signup and view all the answers

What is the significance of seeds' adaptations for dispersal?

<p>Ensuring colonization of new territories (A)</p> Signup and view all the answers

Why do seeds exhibit dormancy?

<p>To withstand adverse conditions (A)</p> Signup and view all the answers

How do seeds contribute to the propagation of plant species?

<p>By fostering variability within plant populations (B)</p> Signup and view all the answers

What is the primary function of the seed coat (testa)?

<p>Safeguarding the embryonic plant within the seed (B)</p> Signup and view all the answers

Which of the following best describes the role of seeds in sustaining terrestrial ecosystems?

<p>Seeds play a pivotal role in the propagation of plant species and sustaining biodiversity (B)</p> Signup and view all the answers

How are seeds classified based on the number of cotyledons?

<p>Monocotyledons and Dicotyledons (B)</p> Signup and view all the answers

Which of the following is a characteristic of monocotyledon plants?

<p>Unique vascular arrangement (A)</p> Signup and view all the answers

What is the primary function of cotyledons in seeds?

<p>Nutrient storage (B)</p> Signup and view all the answers

How do monocotyledons differ from dicotyledons in terms of floral structures?

<p>Monocotyledons have floral parts in multiples of three, while dicotyledons have a broader range of floral structures (A)</p> Signup and view all the answers

What is the significance of seed dormancy?

<p>Seed dormancy allows seeds to germinate under optimal conditions (A)</p> Signup and view all the answers

Which of the following is not a function of seeds?

<p>Production of oxygen (A)</p> Signup and view all the answers

What is the main difference between monocotyledons and dicotyledons in terms of vascular arrangement?

<p>Monocotyledons have a unique vascular arrangement, while dicotyledons have a simpler vascular arrangement (A)</p> Signup and view all the answers

How do seeds contribute to genetic diversity?

<p>Seeds carry genetic material from both parents (D)</p> Signup and view all the answers

What is the primary function of the seed coat?

<p>Protection against environmental stressors (B)</p> Signup and view all the answers

What is the primary role of the plumule in the seed's journey toward maturity?

<p>Enabling photosynthetic endeavors (A)</p> Signup and view all the answers

Which of the following is a mechanism employed by plants to ensure seed dispersal across vast distances?

<p>Ballistic ejection (C)</p> Signup and view all the answers

How do seed banks contribute to the preservation of botanical heritage and genetic wealth?

<p>By storing seeds from both crop plants and wild relatives (D)</p> Signup and view all the answers

Which of the following is an endemic seed that enriches local diets and cultural traditions?

<p>Sorghum (B)</p> Signup and view all the answers

Why do some seeds enter dormancy until environmental conditions become favorable?

<p>To synchronize their emergence with optimal growth conditions (C)</p> Signup and view all the answers

What is the primary function of the radicle in the seed's early development?

<p>To anchor the germinating seedling and facilitate nutrient uptake from the soil (D)</p> Signup and view all the answers

How does seed dispersal contribute to the propagation of plant species?

<p>By colonizing new territories and evading competition (B)</p> Signup and view all the answers

What role do monocotyledon and dicotyledon seeds play in ensuring ecological resilience?

<p>By fostering variability within plant populations (B)</p> Signup and view all the answers

What is the primary function of the seed coat (testa) in seed development?

<p>To ensure the embryo's viability by guarding against desiccation, physical damage, and microbial invasion (B)</p> Signup and view all the answers

How do seeds contribute to the enrichment of local culinary traditions?

<p>By providing gluten-free alternatives and culinary diversity (C)</p> Signup and view all the answers

How do monocotyledon and dicotyledon seeds differ in terms of floral structures?

<p>Monocotyledons have floral parts in multiples of three, while dicotyledons have floral parts in multiples of four. (B)</p> Signup and view all the answers

What is the primary function of the seed coat (testa) in seed anatomy?

<p>To protect the embryo from damage and desiccation (D)</p> Signup and view all the answers

How do seeds contribute to the resilience of terrestrial ecosystems?

<p>By dispersing and colonizing new environments, ensuring the survival of plant species (D)</p> Signup and view all the answers

Which of the following is a common mechanism for seed dormancy?

<p>The presence of a chemical inhibitor, preventing germination (C)</p> Signup and view all the answers

How do seed banks benefit from storing seeds at low humidity levels and sub-zero temperatures?

<p>To prevent germination and maintain seed viability for extended periods (C)</p> Signup and view all the answers

Which of the following best describes the significance of cotyledons in seed anatomy?

<p>They are the primary source of energy for the growing embryo (A)</p> Signup and view all the answers

How do seeds contribute to genetic diversity in plant populations?

<p>By facilitating the exchange of genetic material through sexual reproduction (D)</p> Signup and view all the answers

Which of the following is not a function of seeds in sustaining terrestrial ecosystems?

<p>Participating in the carbon cycle by absorbing carbon dioxide and releasing oxygen (A)</p> Signup and view all the answers

How do seed dispersal mechanisms benefit plant populations?

<p>By allowing seeds to colonize new environments, reducing competition for resources (B)</p> Signup and view all the answers

Which of the following is a characteristic of dicotyledon plants?

<p>Floral parts in multiples of four and a broad range of floral structures (D)</p> Signup and view all the answers

Which of the following is not a factor contributing to the seed's ability to ensure genetic diversity?

<p>Asexual reproduction (C)</p> Signup and view all the answers

Which of the following is not a reason why seeds are able to withstand periods of adversity and synchronize their emergence with optimal growth conditions?

<p>Temperature tolerance (D)</p> Signup and view all the answers

Which of the following is not a benefit of storing seeds at low humidity levels and sub-zero temperatures in seed banks?

<p>Enhancing germination rates (B)</p> Signup and view all the answers

Which of the following is not a role of seeds in contributing to culinary innovation and diversity?

<p>Supporting the propagation of genetically modified crops (D)</p> Signup and view all the answers

Which of the following is not a common seed dispersal mechanism employed by plants?

<p>Buoyancy-assisted dispersal (B)</p> Signup and view all the answers

Which of the following is not a characteristic of the embryonic shoot (plumule) within the seed?

<p>Contributes to anchoring the germinating seedling (C)</p> Signup and view all the answers

Which of the following is not a seed storage organ utilized by dicotyledonous plants?

<p>Hypocotyl (A)</p> Signup and view all the answers

Which of the following is not a function of the seed coat (testa)?

<p>Mitigating the risk of seed deterioration (A)</p> Signup and view all the answers

Which of the following is not a common cultivated seed crop used as a staple food source worldwide?

<p>Potato (A)</p> Signup and view all the answers

Which of the following is not a benefit of endemic seeds in contributing to culinary diversity and tradition?

<p>Supporting the propagation of genetically modified crops (C)</p> Signup and view all the answers

What is the primary function of the cotyledons in monocotyledon seeds?

<p>To store nutrients for the developing embryo (C)</p> Signup and view all the answers

Which of the following best describes the vascular arrangement in monocotyledons?

<p>Vascular bundles scattered throughout the stem (A)</p> Signup and view all the answers

Which of the following correctly describes the cotyledon-based classification of common seed crops?

<p>Maize, rice, and wheat are monocotyledons; beans, peas, and peanuts are dicotyledons (A)</p> Signup and view all the answers

What is the primary function of the radicle in the seed's early development?

<p>To anchor the seedling in the soil (B)</p> Signup and view all the answers

Which of the following is not a function of seeds in sustaining terrestrial ecosystems?

<p>To aid in pollination (A)</p> Signup and view all the answers

How do monocotyledons differ from dicotyledons in terms of floral structures?

<p>Monocotyledons have floral parts in multiples of three, while dicotyledons have floral parts in multiples of four or five (A)</p> Signup and view all the answers

Which of the following is an endemic seed that enriches local diets and cultural traditions?

<p>Quinoa (D)</p> Signup and view all the answers

What is the main difference between monocotyledons and dicotyledons in terms of vascular arrangement?

<p>Monocotyledons have scattered vascular bundles, while dicotyledons have vascular bundles arranged in a circular pattern (A)</p> Signup and view all the answers

What is the significance of seed dormancy in the context of genetic diversity?

<p>Seed dormancy allows seeds to germinate at different times, contributing to genetic diversity (A)</p> Signup and view all the answers

Which of the following best describes the role of seeds in sustaining terrestrial ecosystems?

<p>Seeds contribute to genetic diversity, ecological resilience, and serve as a food source for animals, while also aiding in soil erosion prevention (A)</p> Signup and view all the answers

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