Question

Which type of dehiscence is usually found in capsule fruit?
A. Transverse dehiscence
B. Porous dehiscence
C. Sutural dehiscence
D. Loculicidal dehiscence

Answer 1

A capsule is a form of simple, dry fruit produced by many flowering plant species wherein two or more carpels develop a capsule. The fruit is the seed-bearing structure created by the ovary after flowering in flowering plants (also known as angiosperms). The way through which angiosperms disseminate seeds are fruits.

Complete answer: To refer to a chamber inside the fruit, the term locule is used in Angiosperms (flowering plants). The number of locules within the gynoecium can be equal to or less than the number of carpels and the number of seeds contained within the gynoecium. Loculicidal dehiscence occurs in the capsule, i.e. to release the seeds within, it separates (dehisces) at maturity.
Let us take a look at all the options to get the correct answer,
-In transverse dehiscence, the terminal lid that opens is shaped. The transverse line of dehiscence is such that the upper portion of the capsule ruptures.
-Sutural capsules have dehiscence lines, which are between the carpals, connected with the sutures of the septa or placenta ovary.
-Poricidal dehiscence is referred to as dehiscence through a small hole (pore). In many separate species, poricidal dehiscence occurs in fruit, inducing seed release, as well as in many organisms (flowering plants, ferns, fungi, slime moulds) in sporangia. Poricidal anthers from different flowers are correlated with insect buzz pollination.
-Loculicidal capsules are radially associated longitudinal dehiscent lines often with locules at the locules' midrib or dorsal suture (seam), i.e. not at the septa. Though septa are missing, the dehiscence lines are between the placentae. This type, like Lilium , is prevalent among several Liliaceae members.
Hence, choice D is the correct answer.

Note: Both loculicidal and sutural are divided into parts called valves that are distinguishable. The valves become part of the pericarp (fruit wall) that has broken, without any of the seed or seeds being enclosed. The valve boundaries may or may not correspond with the carpel boundaries. These valves can stay anchored to or fall off the fruit. The valves persist in place in sutural capsules. The break occurs between carpels in some capsules, and every carpal split open in others.