Anatomy of Flowering Plants

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Questions and Answers

Which of the following is a type of fiber found in bast?

Collenchyma
Parenchyma
Sclerenchyma (correct)
Xylem fiber

Which of these fibers originates from phloem?

Sunn hemp
Jute
Flax
All of the above (correct)

Phloem fibers are generally absent in which of the following?

Metaxylem
Protoxylem
Secondary phloem (correct)
Primary phloem

Which of the following is multicellular with protoplasm?

Sieve tube (B) Signup and view all the answers

What gets deposited in sieve pores?

Callose (C) Signup and view all the answers

What is considered 'bast'?

More than one of the above (D) Signup and view all the answers

Which of the following has pit fields?

Both (1) and (2) (B) Signup and view all the answers

In which vascular bundle is a strip of vascular cambium present between the xylem and phloem?

Collateral (B) Signup and view all the answers

What is the defining characteristic of a closed vascular bundle?

The vascular cambium is absent, preventing further growth. (D) Signup and view all the answers

Which of these is NOT a characteristic of primary vascular tissue?

It is responsible for secondary growth. (B) Signup and view all the answers

What is the arrangement of xylem in the given figure (i)?

Endarch (D) Signup and view all the answers

Which of these statements about tracheids and vessels is TRUE?

Both are dead cells with specialized structures for conducting water. (B) Signup and view all the answers

If a vascular bundle is classified as 'conjoint bicollateral', what does this tell you about its structure?

The phloem is located on both sides of the xylem. (A) Signup and view all the answers

What type of vascular bundle is present in Figure (ii)?

Conjoint bicollateral open (A) Signup and view all the answers

Which of these is a common characteristic found in both tracheids and vessels?

They are dead cells, but their structure allows for water transport. (B) Signup and view all the answers

Which of these options would be classified as a closed vascular bundle?

A vascular bundle found in the roots, lacking cambium. (B) Signup and view all the answers

What characterizes the hypodermis in dicots?

Made up of sclerenchyma (A), Contains intercellular spaces (B) Signup and view all the answers

What is the arrangement of vascular bundles in monocot stems?

Scattered throughout the stem (A) Signup and view all the answers

How are the xylem bundles arranged in a typical monocot root?

Usually more than six (D) Signup and view all the answers

The vascular bundle in monocot stems is enclosed within which type of sheath?

Sclerenchymatous sheath (A) Signup and view all the answers

How many vascular bundles can typically be found in a dicot root?

Between 2 and 6 (B) Signup and view all the answers

What is the predominant tissue type forming the hypodermis in the sunflower stem?

Sclerenchymatous tissue (C) Signup and view all the answers

What is a distinguishing feature of secondary growth in monocot roots?

It does not occur (C) Signup and view all the answers

Which one of the following combinations describes the hypodermis in sunflower and maize stems?

Sclerenchymatous, collenchymatous (A) Signup and view all the answers

Which statement about albuminous cells in non-flowering plants is correct?

C represents cells replaced by albuminous cells in gymnosperms. (C) Signup and view all the answers

Which plant is distinguished by having a multilayered epidermis in its dorsiventral leaf?

Banyan (B) Signup and view all the answers

Which statement regarding the stomatal apparatus is NOT true?

Guard cells are always surrounded by epidermal cells. (B) Signup and view all the answers

What type of vascular bundle is represented if xylem and phloem are in separate bundles?

Radial vascular bundles (C) Signup and view all the answers

Which of the following pairs regarding vascular bundles is mismatched?

Conjoint collateral – Eucalyptus (C) Signup and view all the answers

Which statement is true about phloem parenchyma?

It is absent in most monocots. (D) Signup and view all the answers

How do guard cells contribute to the stomatal function?

They control the turgidity of the stomata. (D) Signup and view all the answers

Which vascular bundle type is described as having both xylem and phloem arranged on the same radius?

Conjoint collateral (C) Signup and view all the answers

Which component is not included in the definition of bark?

Both A and B (B) Signup and view all the answers

What is the term for bark formed early in the season?

Hard bark (D) Signup and view all the answers

Which of the following does not accurately match 'Column I' with 'Column II' regarding tissue layers?

C - (ii) (B) Signup and view all the answers

Which layer is identified as the innermost layer of the cortex?

Endodermis (B) Signup and view all the answers

What is the correct match for the formation of cork cambium during secondary growth in dicot roots?

Pericycle (B) Signup and view all the answers

What type of bark is formed towards the end of the season?

Soft bark (C) Signup and view all the answers

Which tissue is primarily associated with the development of cork?

Phellogen (A) Signup and view all the answers

Which of the following correctly categorizes bark formation?

Spring bark as soft, autumn bark as hard (B) Signup and view all the answers

Identify the correct statement regarding the comparison of monocot and dicot roots, based on the provided information.

Dicot roots possess a well-developed pith, while monocot roots have a poorly developed pith. (C) Signup and view all the answers

Consider a dicot stem, and refer to the information provided. Which of the following statements about the vascular bundles and pith is correct?

The vascular bundles are arranged in a ring, with the pith being large and well-developed. (A) Signup and view all the answers

Which of the following accurately reflects the arrangement of vascular bundles in a monocot root?

They are arranged in a scattered pattern. (B) Signup and view all the answers

Refer to the information about the pericycle in monocots and dicots. Which of the following is TRUE?

The pericycle in monocots is involved in the formation of lateral roots and cork cambium, while in dicots, it only gives rise to secondary roots. (D) Signup and view all the answers

Identify the feature that is correctly matched with its description according to the provided information.

Cambium in monocot stem - absent, leading to no secondary growth. (B) Signup and view all the answers

Which of the following groups of features is INACCURATELY described based on the provided information?

(ii) Cambium: present in monocot root, absent in dicot root / (iv) Pericycle: gives rise to only secondary roots in monocot root, gives rise to lateral roots and cork cambium in the dicot root (B) Signup and view all the answers

Based on the information provided, which of the following statements accurately describes the difference between monocot and dicot roots?

Monocot roots lack a cambium and therefore do not undergo secondary growth, while dicot roots have cambium and exhibit secondary growth. (C) Signup and view all the answers

According to the information provided, identify the correct statement regarding the features of both monocot and dicot stems.

Monocot stems have scattered vascular bundles and a poorly-developed pith, while dicot stems have vascular bundles arranged in a ring and a well-developed pith. (B) Signup and view all the answers

Flashcards

Bast fibres

Fibres made from parenchyma, collenchyma, xylem, or sclerenchyma.

Origin of jute

Jute originates from phloem and is a bast fibre.