Correct option/s : 
All plants are multicellular. 
All plants are eukaryotic. 
All plants are autotrophic. 
Explanation: 
Not all plants are vascular, for example mosses. They don't have specialized system for transport of water and solutes. Therefore, Option 1 is false. 
 Only bacteria, protista and yeast are unicellular. Rest all the organisms are multicellular. Thus option 2 is true. 
 Only bacteria are prokaryotic, rest all organisms are eukaryotic, including all the plants. Option 3 is true. 
Plants are the only organisms which are autotrophic. Although apart from this mode of nutrition, plants can be parasitic or carnivorous as well. But primarily they all are autotrophic. Option 4 is true 
Not all plants need sunlight, some get energy from the chemical substances from their surroundings. Option 5 is False. 
 Plants reproduce by sexual as well as asexual means. Not all plants reproduce sexually. Option 6 is false.