SCIENCE
PLANT KINGDOM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Upper oogoniu and lower round antheridium
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Globule and nucule present on the same plant
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Upper antheridium and lower oogonium
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Globule is male reproductive structure
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Detailed explanation-1: -Hence, statement ‘Upper antheridium and lower oogonium’ is incorrect among all the given statements.
Detailed explanation-2: -Male and female gametangia are called antheridia and oogonia respectively. Male fructification is called globule and the female is nucule. They are borne at the nodes of short branches, globule, towards lower side and nucule (female structure) towards upper side.
Detailed explanation-3: -Chara is a monoecious plant so it contains both male and female parts on a single plant. Hence, the right answer is option C.
Detailed explanation-4: -Characteristics of Chara. Chara is commonly known as stoneworts because they are covered with calcium carbonate. The structure of Chara is multicellular and profusely branched, and the plant body is divided into rhizoids and a main axis.
Detailed explanation-5: -The male sex organs are called antheridium or globule and the female oogonium or nucule. Most of the Chara species are homothallic i.e., the male and male sex organs are borne on the same nodes, (Fig.