Which type of endosperm formation includes two stages: free nucleus formation stage and cell formation stage?
A: nuclear endosperm
B: cellular endosperm
C: helobial endosperm
D: the above types are all included
A: nuclear endosperm
B: cellular endosperm
C: helobial endosperm
D: the above types are all included
举一反三
- The development of a team can be roughly divided into the following four stages（ ） A: Formation stage B: Fluctuation stage C: Stability stage D: Maturity stage
- 中国大学MOOC: Which of the following is not the stage of urine formation?
- Which of the following is not the stage of urine formation? A: filtration B: collection C: reabsorption D: secretion
- The process of entrepreneurship are _____________. A: financing stage B: a resource gathering stage C: creating an organization stage D: a concept formation stage
- The sub-component which includes the rules governing word formation is called ________.