Exam Questions Plant Life Cycle And Development Ch.13

Type: multiple choice question

Title: Chapter 13 - Question 01

01) Which of the following is not true of the first cell division of a plant embryo?

a. It establishes the apical-basal axis of the plant

b. It gives rise to a suspensor

c. It is parallel to the long axis

d. It gives rise to a proembryo

Type: multiple choice question

Title: Chapter 13 - Question 02

02) At which stage do cotyledons start to develop wing-like structures?

a. Heart stage

b. Globular stage

c. Octant stage

d. Triangular stage

Type: multiple choice question

Title: Chapter 13 - Question 03

03) Which of the following is not true of auxin?

a. Auxin functions as a diffusible extracellular signaling factor

b. It establishes the apical-basal axis

c. It is actively transported from the basal cell into the apical cell

d. The concentration gradient of auxin is necessary for specifying different cell fates

Type: multiple choice question

Title: Chapter 13 - Question 04

04) Which of the following is not a correct interpretation of a differentiated somatic cell’s ability to regenerate a new plant?

a. Maternal determinants are of little or no importance for plant embryogenesis

b. The fate of many cells in the adult plant body is not fully determined

c. This opens up avenues for creating transgenic plants

d. Many adult plant cells have lost their potential

Type: multiple choice question

Title: Chapter 13 - Question 05

05) Which of the following is the type of meristem of the axillary bud near the base of a leaf?

a. Shoot apical meristem

b. Lateral shoot meristem

c. Inflorescence meristem

d. Floral meristem

Type: multiple choice question

Title: Chapter 13 - Question 06

06) A diffusible inhibitor emanating from the shoot apex inhibits the development of lateral buds below the apical bud. What is this inhibitory effect called?

a. Lateral inhibition

b. Apical dominance

c. Lateral dominance

d. Apex inhibition

Type: multiple choice question

Title: Chapter 13 - Question 07

07) What is the name of the slowly dividing, self-renewing stem cells of the central zone within a meristem?

a. Centrals

b. Peripherals

c. Initials

d. Apicals

Type: multiple choice question

Title: Chapter 13 - Question 08

08) Which of the following axis is represented by the line between the leaf base to the leaf tip?

a. Proximo-distal

b. Adaxial-abaxial

c. Apical-basal

d. Dorso-ventral

Type: multiple choice question

Title: Chapter 13 - Question 09

09) Which of the following is not true of homeotic floral mutations in Arabidopsis?

a. One class of mutants affect whorls 1 and 2

b. One class of mutants affect whorls 3 and 4

c. One class of mutants affect whorls 2 and 3

d. One class of mutants affect whorls 1 and 4

Type: multiple choice question

Title: Chapter 13 - Question 10

10) What kinds of proteins do floral organ identity genes encode?

a. Intercellular signaling ligands

b. Cell-adhesion proteins

c. Cell-surface receptors

d. Transcription factors