Plant Biology Quiz: Monocots vs. Dicots

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What is a characteristic feature of monocot roots?

Presence of a pith in the center (correct)

Presence of a vascular cambium

Undergoing secondary growth

Absence of a pith in the center

What is true about herbaceous eudicot roots compared to monocot roots?

Their xylem and phloem form a solid mass. (correct)

They undergo secondary growth.

They lack a pith.

They have more cambium than monocots.

Which statement accurately describes the vascular cambium in monocots?

Monocots contain multiple cambium layers.

Monocots always undergo secondary growth.

Monocots lack a vascular cambium. (correct)

Monocots have a vascular cambium that enables secondary growth.

Which of the following is NOT a characteristic of dicots?

They have an unlimited number of xylem and phloem. Signup and view all the answers

What do dicots give rise to that monocots do not?

Corks and cambium Signup and view all the answers

What is the role of hairs on leaves in relation to air currents?

They create local humidity and reduce air current exposure. Signup and view all the answers

What is one physiological change involved in leaf abscission?

Formation of a protective layer at the stem. Signup and view all the answers

Which of the following leaves is primarily used to produce the dye henna?

Leaves of Lawsonia inermis Signup and view all the answers

Which economic importance of leaves is related to beverages?

Food items like spinach and lettuce. Signup and view all the answers

Which plant is known for its flammable resin that can be used as fuel?

Yareta Signup and view all the answers

What percentage of the earth is covered by saline water?

80% Signup and view all the answers

What term describes plants that are adapted to salty habitats?

Halophytes Signup and view all the answers

Which of the following statements about halophytes is true?

Most halophytes can survive in both saline and freshwater environments. Signup and view all the answers

How do plants typically respond to increased salts in their environment?

Succulence Signup and view all the answers

What distinguishes halophytes from glycophytes?

Halophytes adapt specifically to saline environments. Signup and view all the answers

What is the primary function of the root cap?

To protect the delicate root apical meristem Signup and view all the answers

How do root caps respond to gravitational forces?

They exhibit positively geotropic behavior Signup and view all the answers

What characteristic of root hairs enhances the absorptive capacity of roots?

They are short-lived and increase surface area Signup and view all the answers

What substance do root caps secrete to assist in moisture retention?

A mucilaginous substance Signup and view all the answers

Which of the following statements about root hairs is true?

They increase the area for moisture absorption Signup and view all the answers

Which of the following correctly describes the phototropic behavior of root caps?

They grow away from light Signup and view all the answers

What is the lifespan of root hairs?

They are short-lived, lasting a few days to weeks Signup and view all the answers

In what way do root caps assist a plant's growth towards moisture?

By detecting moisture and guiding root direction Signup and view all the answers

What is the primary function of tendrils in plants?

To aid in structural support Signup and view all the answers

Where are lenticels typically found?

On the surfaces of leaves and certain fruits Signup and view all the answers

What is the characteristic of a tuber?

A thickened end of a rhizome specialized for food storage Signup and view all the answers

Which of the following is NOT an economic importance of stems?

Fuel source Signup and view all the answers

What are suckers in relation to plant structures?

Vertical shoots that arise from underground stems Signup and view all the answers

What role do potatoes and sweet potatoes serve in a plant's structure?

They store energy as tubers. Signup and view all the answers

Which of the following best describes a cladophyll?

A stem which is flattened and acts like a leaf Signup and view all the answers

What is the primary function of periderm associated with lenticels?

To allow gas exchange Signup and view all the answers

What does the protoderm develop into in plants?

Epidermis Signup and view all the answers

Which type of meristem is primarily responsible for the increase in plant length?

Primary/apical meristem Signup and view all the answers

Where is parenchyma tissue typically found in plants?

In the ground meristem Signup and view all the answers

What is one of the primary functions of the root system in plants?

Nutrient absorption Signup and view all the answers

Which of the following is not a type of plant organ listed?

Foliage Signup and view all the answers