10 MCQ on Plant Science for various Agriculture Exams✅ Part -79

117. In the anther wall
     (a) Tapetum lies next to the epidermis
     (b) Tapetum lies just inner to the endothecium
     (c) Middle layers lie between endothecium and tapetum
     (d) Endothecium lies inner to the middle layers

118. Apospory is defined as
     (a) Formation of embryo from egg of an embryo sac developed directly from megaspore mother cell
     (b) Formation of embryo from egg of an embryo sac developed directly from a cell of nucellus
     (c) Formation of embryo from nucellus
     (d) Formation of embryo from integument

119. Monosporic 8-nucleate female gametophyte is found in
     (a) Fritillaria
     (b) Polygonum
     (c) Adoxa
     (d) Allium

120. Ruminate endosperm is
     (a) Smooth
     (b) Diploid
     (c) Rough
     (d) Tetraploid

121. Endoscopic development of the embryo is when
     (a) The embryo develops from the chalazal half of the zygote
     (b) The embryo develops from the micropylar half of the zygote
     (c) The embryo is surrounded by suspensor on either side
     (d) The suspensor is absent

122. In which of the following Helobial endosperm occurs?
     (a) Acalypha
     (b) Cocos
     (c) Cannabis
     (d) Adoxa

123. When the ovary develops into the fruit without fertilization of the ovules, the phenomenon is
     (a) Parthenospory
     (b) Apomixis
     (c) Parthenocarpy
     (d) Polyembryony

124. An embryo may sometimes develop from a cell of an embryo sac other than the egg. This is called
     (a) Parthenocarpy
     (b) Apogamy
     (c) Apospory
     (d) Parthenogenesis

125. Parthenogenesis is most commonly seen in
     (a) Grape
     (b) Litchi
     (c) Apple
     (d) Mango

126. In anatropous ovules, the micropyle is
     (a) At 45° with funicle
     (b) In straight line with funicle
     (c) Side by side with funicle
     (d) At right angles with funicle

127. Micropropagation is
     (a) Germination of seed with cotyledons above the soil
     (b) A technique to obtain new plants by cultivating the cells or tissues in culture medium
     (c) The mature stage of endosperm
     (d) To manufacture hormones

128. Development of egg without fertilization is
     (a) Apomixis or Adventive embryony
     (b) Apocarpy or Polyembryony
     (c) Parthenocarpy
     (d) Parthenogenesis

129. The best example of polyembryony is
     (a) Cycas
     (b) Cocos
     (c) Citrus
     (d) Capsicum